The location of the flat is good, it is about 8 minutes from the central station. You can reach it by bus or metro. There is also a supermarket a few minutes walk away that is open 24 hours.
Check-in was easy, you meet someone on site who gives you the keys. When you check out, you just have to leave the keys on the table.
The flat was moderately furnished. The first thing to go was the door handle, which was supposed to be fixed the next few days, but it never happened.
We booked for three people, but there were only two beds prepared. The towels for the third person and the blanket were supposed to be brought the next day. As the single bed was very disgusting with dirt, dust and hair, we had to buy a bedsheet and blanket at 10pm. The towel was not brought the next day. The double bed was cleaner, but there were still several small foreign hairs on the bed.
Overall, the flat was not very clean. The hob, the sink and the shower were smeared. Some of the silicone in the shower was black and there was lime all over the doors. The cooking utensils were also dirty, with water stains, and there was still dust in the glasses. So we bought our own cutlery and plates.
The walls were very thin overall, so you could hear everything from the street, even normal conversations. Of course, we also heard the neighbors from time to time, but that was very little.
The wifi didn't work properly, we lost connection every few minutes.
The price/performance ratio of 33€ per person per night was ok, but due to the poor cleanliness it is too expensive.
In the end, we were refunded 30 euros for the blanket and 20 euros for the poor cleanliness.