I have stayed at this apartment with my friend. For two of us it felt quite spacious. It could easily fit 4 people. Great, that there are two separate bathrooms. The location is great, very close to the city center.
The checkin was ok, I had to wait around 30 min for the cleaning lady to finish. Considering 70 euro cost for the cleaning, I expected apartment to be cleaner than it was. It was a bit stinky inside, I guess because the building itself is old.
For the check out we just had to leave the keys inside the flat, which was very convenient.