Very clean and good location (public transport or walking if you like to ramble). There were 5 of us and it was OK but up to 3 is optimal. Little glitch on check- in but it did not really matter, the check-in system is straightforward and worth following by other owners. My impression is the flat is very busy, a couple of doors require amendments at the moment. Beds are excellent - next time I will come for sleeping :-) ... and it is in Vienna - the city itself feels most liveable. I would recommend/stay there again.