This apartment is comfortable, light filled, spacious, and well appointed. It is also in a great location, one block from the Nachtsmarkt, 2 blocks from a major subway stop, and 10 minutes from the opera. The building has an elevator. We had a group of 5 and had plenty of space. As other reviews mention, there is only one bathroom but at least the toilet is in a separate room.
We never met the hosts but their representative was very helpful when she checked us in. I also found the hosts responsive in addressing all questions.
I would stay here again!