The vacation at Karin's was great. The house is really big (there were 4 of us) and everyone could have their privacy when they needed it, and the common areas are really spacious. It is really close to Vienna central station, and the location is beautiful. It has a beautiful view of the park, lots of greenery, and the house has everything you could need.
Needless to say Karin was always in touch and willing to solve anything that might come up.
If I come back to Vienna, I will definitely come back to Karin's!