This hotel is a 5 minute walk from Nyhavn. Check in is at 3pm but they were kind enough to let you drop off your luggage early.
There are no amenities in the room (fridge, microwave coffee maker, TV) and the walls are thin so you hear everything. The drain in my shower was slow so it collected dirt which was disgusting as they don't clean your rooms everyday.
They also turn off the elevators from midnight to 7am, so if you have an early flight in the morning, and depending on what floor your room is on, be prepared to struggle down flights of stairs with your heavy luggage. It is convenient though in some measures. It's a 20 minute cab ride from the airport.
I personally wouldn't recommend the hotel if comfort is important to you.