Can't really recommend this place. The place is large and the location was great, but there were a lot of things I didn't like.
The sofa was filthy and sheets were dirty, the kitchen doesn't have anything useful in it, not even dish soap. One of the showers doesn't close all the way so water gets everywhere, meanwhile there's a toilet that doesn't even have a seat to sit on.
As mentioned in the listing, for three people you have to pay 50 euros in cash, and for that they will give you one towel per person. Even the elevator costs 20 cents to use, and if you don't have change with you then you'll be walking up four flights of stairs.
I recommend skipping this place.