Enjoy your visit to Sønderborg with a stay at Hotel 6400. Freebies like WiFi and self parking are added perks, and guests looking to stay active can check out the nearby hiking/biking trails. Other features include a terrace and a garden.
Enjoy your visit to Sønderborg with a stay at Hotel 6400. Freebies like WiFi and self parking are added perks, and guests looking to stay active can check out the nearby hiking/biking trails. Other features include a terrace and a garden.
At a glance
Hotel size
48 rooms
Arriving/Leaving
Check-in start time: 3:00 PM; Check-in end time: anytime
Contactless check-in available
Minimum check-in age: 18
Check-out time is 11 AM
Contactless check-out available
Special check-in instructions
There is no front desk at this property
Guests can access their accommodation through a private entrance
Information provided by the property may be translated using automated translation tools
Required at check-in
Credit card, debit card, or cash deposit required for incidental charges
Government-issued photo ID may be required
Minimum check-in age is 18
Pets
Pets not allowed
Internet
Free WiFi in public areas
Free WiFi in rooms
Parking
Free onsite self parking
Wheelchair-accessible parking and van parking on site
Other information
Smoke-free property
Property amenities
Food and drink
Buffet breakfast (surcharge) each morning 7:00 AM–9:30 AM
What to do
Hiking/biking trails nearby
Working away
Business center
Meeting room
Services
Tour/ticket assistance
Laundry facilities
Luggage storage
Bicycle rentals
Facilities
Garden
Terrace
Banquet hall
Accessibility
Elevator
Wheelchair-accessible parking
Wheelchair-accessible van parking
Wheelchair-accessible path to elevator
Wheelchair-accessible registration desk
Wheelchair-accessible lounge
Hand-held showerheads
Well-lit path to entrance
Room amenities
Be entertained
Flat-screen television
Satellite TV channels
Home comfort
Heating
Iron/ironing board
Sleep well
Premium bedding
Crib/infant bed (surcharge)
Freshen up
Private bathroom
Shower only
Free toiletries
Hair dryer
Towels
Stay connected
Desk
Free WiFi
Desk chair
More
Daily housekeeping
Mobile key entry
Special features
Awards and affiliations
Sustainability Certifications
This property is certified by this third-party sustainability certification scheme: Green Key (Foundation for Environmental Education). For more information on what this certification requires and verifies, please visit their website.
Fees & policies
Optional extras
Buffet breakfast is offered for an extra charge of approximately DKK 125 for adults and DKK 62.5 for children
Children & extra beds
Cribs/infant beds are available for DKK 250.0 per stay
Policies
Extra-person charges may apply and vary depending on property policy.
Guests can rest easy knowing there's a fire extinguisher on site.
Cashless transactions are available.
Also known as
Hotel 6400 Sonderborg
Hotel 6400 Hotel
Hotel 6400 Sønderborg
Hotel 6400 Hotel Sønderborg
Hotel 6400 Hotel
Hotel 6400 Sønderborg
Hotel 6400 Hotel Sønderborg
Frequently asked questions
Does Hotel 6400 offer free cancellation for a full refund?
Yes, Hotel 6400 does have fully refundable room rates available to book on our site. If you’ve booked a fully refundable room rate, this can be cancelled up to a few days before check-in depending on the property's cancellation policy. Just make sure to check this property's cancellation policy for the exact terms and conditions.
Are pets allowed at Hotel 6400?
Sorry, pets aren't allowed.
Is parking offered on site at Hotel 6400?
Yes, there's free self parking.
What are the check-in and check-out times at Hotel 6400?
Check-in start time: 3:00 PM; Check-in end time: anytime. Check-out time is 11 AM. Contactless check-in and check-out are available.
What is there to do at Hotel 6400 and nearby?
Have fun during the warmer months with activities nearby such as hiking. Hotel 6400 also has a garden.
What's the area around Hotel 6400 like?
Hotel 6400 is a short 15-minute walk from Flensburg Fjord and 14 minutes' walk from Sønderjyllands Radiomuseum.
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Reviews
Hotel 6400 Reviews
8.2
Very Good
All reviews shown are from real guest experiences. Only travelers who have booked a stay with us can submit a review. We verify reviews according to our guidelines and publish all reviews, positive or negative.More informationOpens in a new window
8.4
Cleanliness
7.4
Location
8.0
Staff & service
8.0
Property conditions & facilities
Guest review summary
What guests liked
The breakfast was consistently described as top-notch, really good, and superb with a nice selection and great quality. (25 reviews)
Free coffee was cool. Clean water. Great breakfast buffet.
Verified review
10/10 Exceptional
Aug 7, 2022
Mini supermarket in walking distance. Prefect vacation.
Verified review
10/10 Exceptional
Aug 20, 2024
It is a good property.
Verified review
8/10 Very good
Mar 31, 2025
very nice experience
Verified review
10/10 Exceptional
Aug 14, 2024
Super alt ok
Verified review
2/10 Poor
Jun 29, 2026
Was not accessible. Could not use the service.
Verified review
8/10 Very good
Aug 7, 2025
Værelset var helt ok, men et ikke bemandet hotel, er nok ikke lige os. Beliggenhed er heller ikke for os godt, for langt til byen, når man nu skal væk fra hotellet, når man skal have aftensmad. For dissideret billigt er hotellet jo ikke. Morgenmaden var bare helt ok, stort og bredt udvalg af morgenmad.
Hilsen fra Lillian og Svend Erik.
Verified review
8/10 Very good
Aug 6, 2025
Skuffet 3 stjerner er højt vuderet
Den seng jeg sov i de 2 nætter var ret dårlig betydelig blødere og sammenfalden end min hustrues.
Drr var ingen service og ved morgenbord skal man selv ryde af.
Verified review
10/10 Exceptional
Jul 27, 2025
Ældre hotel men pænt rent og rigtig fin morgenmad
Verified review
4/10 Fair
Jul 25, 2025
Hotel eller vandrerhjem?
"Hotellet" mindede mere om et vandrerhjem.
Rigtig god morgenmad
Forholdet mellem pris og kvalitet er ikke i orden!
Verified review
8/10 Very good
Jul 23, 2025
Pænt hotel i kedeligt område
Pænt og rent hotel med fin morgenmad. Beliggende i udkanten af byen i kedeligt område. TV kanaludvalget er dårligt, havde f.eks. ikke TV2. Røgluft trænger ind på værelser da der ryges lige udenfor.
Verified review
8/10 Very good
Jul 22, 2025
Ok ophold. Nemt selvbetjening vedr. indcheckning via kode. Fin morgenmad.
Skuffende gammelt badeværelse, især da hjemmesiden skriver moderne badeværelser. Der er ikke helt styr på udcheckning. Rengøringspersonale kom ind på værelset, selv om vi havde til kl. 11 til at checke ud.
Verified review
8/10 Very good
Jul 20, 2025
Ganske udemærket hotel i rolige omgivelser.
Det fungerede fint med sms og koder.
Morgenmaden kunne være mere frisk. Kaffen var ikke nybrygget og brødet virkede lidt tørt…
Skønt med fri adgang til kaffe/the mm.
Verified review
8/10 Very good
Jul 19, 2025
Schwieriges Einchecken
Das Einchecken am Sonntag war schwierig, weil das Hotel abgeschlossen war und keine Rezeption besetzt war. Es erforderte mehrere Anrufe bei der Hotline, um in sHotel zu kommen
Verified review
8/10 Very good
Jul 16, 2025
Rengøring
Det var så fint 👌
Verified review
10/10 Exceptional
Jul 10, 2025
es war nett dort
Verified review
8/10 Very good
Jul 5, 2025
Ganske udemærket hotel, ligger desværre en del udenfor alt.
Verified review
8/10 Very good
Jun 30, 2025
Das Hotel bietet Frühstück bis 09:00 Uhr an. Ein bisschen schade. Ansonsten alles selfmade kein Personal anwesend. Bad ok
Verified review
6/10 Good
Jun 23, 2025
Besonders hervorzuheben ist die Sauberkeit sowie die Freundlichkeit des Reinigungspersonal.
Frühstück war in Ordnung.
Ansonsten eher für ein Kurztrip geeignet als für einen längeren Urlaub
Verified review
8/10 Very good
Jun 23, 2025
Der blev lovet login koder til indgang og værelset, hvilket vi ikke modtog. Værelser og morgenmad udmærket.
Verified review
8/10 Very good
Jun 10, 2025
Ubehageligt at man ikke møder personale!
Verified review
8/10 Very good
Jun 7, 2025
For det meste godt
Elsker for det meste 6400, men denne gang var der ikke TV2 på tv’et, kun DR og tyske kanaler. det er ikke godt nok; slet ikke i et comfortværelse, som man har betalt ekstra for.
Brødet til morgenmaden virkede gammel, fra dagen før. Det var ikke godt. Ellers fungerede det godt
Verified review
10/10 Exceptional
May 30, 2025
Helt topp, nydelig rom, herlig basseng og badstue. Bilheis var en ny opplevelse for meg, men fungerte strålende. Byen hadde mye fint å få med seg av arkitektur
Verified review
6/10 Good
May 23, 2025
En heæ skole var på ophold oh der var mega meget larm hele aften og natten
Verified review
2/10 Poor
May 21, 2025
Det var en tysk skoleklasse på hotellet gode opførte sig som vilde dyr indtil kl. 22:00 natten gik heldigvis godt. Men jeg var nød til at gå en tur om aftenen for larmen.
Og bruseren på værelset 212 kommer der kube 2 stråler ud af.