We really enjoyed our stay at Supernova, the common areas and room are really nicely designed, and we quite liked the labyrinth of stairs to get to and from our room! (The lift was being fixed when we stayed- good to know if you have any accessibility issues)
The hotel was really quiet, a great place to relax, sleep and feel properly rested. Great rain shower, and products from the hotels own Superette range. The only little annoying thing was the hairdryer (all the ones we had in Rotterdam/Amsterdam were safety ones you have to keep pressing on to use- would bring my own next time) would definitely stay here again. It’s in an interesting area, lots of street art and in easy walking or transport distance to the main station and the rest of Rotterdams sights.
They also have breakfast available and a nice little lounge area with books in the lobby area, along with a shop for some essentials/snacks.