Christiane's place is fantastic. We were there with two little kids and the place is big enough to feel comfortable. It has everything you might be needed. Little treats at the arrival were great. The surrounding is excellent- street food, bakery, restaurants, pharmacy and other places are all around, as well as the bus station and ubahn (it takes few minutes to the city center with U1 line). There is also secure parking garage (12€/per day) or you can park on the street (free on weekend days) which is great if you arrive by car. Christiane is so easy to communicate with and was on disposal whenever we needed. We reccomend this place to everyone who wants to explore Vienna and relax after sightseeing! Feels like home!