The location of the flat could not be better, with an extremely nice inner yard (where we parked our rented bicycles). The flat is on multiple floors with narrow stairs, which you might want to take into consideration. This was not a problem for us, even after running the Copenhagen marathon :). In my opinion, the living/dining room is not very large, especially if you are a group of 12 people. A very large share of the floor space is occupied by a large dining table, and the sofa can only accommodate 2 persons. For our group of 5, the living/dining room was fine. In terms of cleanness, or the lack of it, the flat could use a thorough overhaul. Also some of the kitchen appliances would need replacement, especially the coffee machine (which was broken at arrival) and the water boiler. The sewage pipe running down from the shower on the third floor was very badly clogged. Nonetheless, I would recommend the flat (but not for 12 persons).