We stayed for 2 nights and that was fine.
Notes:
+ Check in and communication was really easy.
+ The apartment is really good located.
+ A lot of restaurants, bakeries and stores are around.
+ Tram station is close to the apartment.
+ It has everything you need for some days.
+/- In principle it was clean.
- You could hear all the noises of the neighbors. It felt like no privacy.
- The apartment is really used. The bed was too old and less comfy.
- The bathroom was a bit dusty and we saw some silverfishes