Nice place, great value for money.
Neat room, comfortable bed, clean. You can't see it on the picture, but there was also a chair and table and even a little fridge (though I switched it off because I didn't need it and wanted to save energy :-). I was allowed to use all the stuff from the kitchen.
Easy communication with the host. (The usual inhabitant happened to be on holiday, but Dmitri handed me the keys at the station, worked very smoothly.)
Sure, a few things were a little makeshift (as some previous guests commented), like the bathroom having no ordinary light but a desk lamp fixed to a curtain, which made the room a little dark. Personally, I didn't find this a problem at all, however.
Location is not in the historical centre, but you can get there quickly enough by a brisk walk or bike ride or public transport.
Perfect place to stay if you want to explore Vienna for a few days without spending a fortune!