I've stayed here several times now and it always hits the spot for me. The location within Resorts World is great with a plethora of shops, bars and eateries on your doorstep, plus the casino if you like a flutter. The spa here is very good, particularly the outdoor (but sheltered) hot tub.
Breakfast is definitely worth the money if you want to fuel up for the day ahead; there's loads of choice and it's in the sky bar, with good views of the planes coming into the airport.
Rooms are clean, modern and well equipped - the Nespresso machine is a nice touch. The beds are huge and comfortable and the shower in the bathroom is one of the best in any hotel I've been in.
I have stayed in places that do certain things a little better than the Genting, but this hotel does everything, really well.
A little tip - don't pay the £15 per day parking that hotel reception offer you - if you spend £20 in any shop or restaurant in Resorts World, they will validate your parking ticket and make it £3.50 instead!