Everything suitted us. The room is nice, large, clean and warm. Location is very convenient, very close to metro. Easy access to the airport and center by metro.
A few things that did not bother us, but may be of concern to somebody else. It is indeed the 5th floor (no elevator) + one more level by the spiral stairs. The toilet/shower is shared with the owners. No kitchen access (which we did not need anyways). Ninna was kind to set up an area with utensils, a microwave and a kettle, which is convenient for a breakfast or evening tea.