Christian's apartment is centrally located in Vienna, you will be able to reach most tourist destinations on foot. It is a fairly quiet, bright and warm place. Since most places in the building are vacation rentals, it feels a little bit like a hotel.
There are beds in the big bedroom, in the living room and one extra bed in the tiny bedroom next to the kitchen. There is no hallway between the living room and the big bedroom, so anybody going to the bedroom will be walking through the living room - Just be aware of this if you plan on using the living room to sleep in. The windows in the tiny bedroom, entrance and kitchen have frosted glass and open onto a hallway leading from the staircase to another apartment, so you can not air out the rooms very well this way. Also, you will hear any person going down the staircase if you sleep in the tiny bedroom, this is not suitable for a light sleeper.
The kitchen is well equipped with enough plates, cups, glasses pots and pans to cook. But do not expect any cooking essentials other than salt, pepper, oil and vinegar! Also, bring your own trash bags, tabs for the dishwasher, dish sponge etc. since the owner does not provide extras.
All in all the place is good value, it worked well for our family of four.