This flat is brilliant. It's up lots of stairs, but well worth the climb. Downstairs has good sized bedrooms, with super comfy beds and extra bedding, a full dining room and kitchen plus a little terrace (which we didn't use in the cold and rain but I imagine is lovely in the summer). However, it's the upstairs that really makes this place, it has a huge upper room with big windows, comfy sofas, and slightly hilarious decorative animal heads on the wall (fairly certain they are not real). It is a great space to have a group in, and being so well located we popped back in the afternoons to chill out over cups of tea and glasses of wine.
Everything is walk-able in Copenhagen city, and being so centrally located made that even easier. Additionally for day trips out of the city, being right at the train station was perfect. Everything about this place was great and easy.