This place is amazing, in that you will be amazed at how something like this can even exist, especially for 100€ per night. Here are just some of the highlights:
-the door is simultaneously so rickety that we were afraid of leaving anything in the apartment, and yet so annoying we needed to call a locksmith to get in
-the heating is provided by 3 gas furnaces, of which only 2 actually "work", and emit noises that can best be describes as a clockwork dragon with indigestion
-the place is so barren that it literally echoes when you whisper
-the floors creak and wobble to an extend that you see the closets shake on the other side of the room when you stand out of bed
-the view is of a beautiful gothic style church when you look up, and an original construction dump when you look down
-if you are antisocial the landlord is actually great, since you will only see him for 5 minutes when you check in
Possibly in the summer, if you plan to spend absolutely no time in the apartment at all, and just want something reasonably specious within an OK neighbourhood and with good public transportation, this might not be the worst option. Otherwise stay away.