I highly recommend Walter's place for staying if you are planning a trip to Vienna.
Actually the house was very very clean, it was cozy, there was plenty of hot water, many supplies in the house and of course accommodation in order to cook something or make something to drink. Also Walter was really helpful and polite, we had a really good communication before and during our staying. Furthermore, the location is good in general, near to the metro station and easy to walk to the town. Walter has definitely earned the 5 stars!