Flat (we took the one under the roof) is really nice and lay out is brilliant even you are 2 families with kids each person can have his own privacy. Well equipped also with wine/champagne glasses. Walking or bike distance from the center, Only negative aspect is that was too hot in Vienna so we had to sleep with open windows, the near road was really noisy all night long. Metehan is a great host, fully recommend, easy to park cars and bikes in front of building door.