The staying with Sebastian was great, even when our trip was a short one. He is very friendly and eveything is according to what he offers. He gave us some maps around the city. Nearby there are some stores and restaurants, but what you need to see in Vienn is not near his appartment, but you can easily take the tram to get there or the metro station :). Parking for free near the building, just a couple of blocks away so you don't have to pay any fine there ;)