Michael and Mathias offer an amazing place to stay in Vienna which I would recommend to everyone. The location is perfect - very close to the Ring and old town nearing the university and great churches. Lastly on location - couple of local supermarkets are one-minute walk. The place is spacious to host four of us in three separate rooms. It is very clean. The only advice for people coming from the US - be prepared for a much smaller kitchen and bathroom than you are used to ;-)
I’d certainly recommend the place to everyone coming to Vienna with a family