We had a lovely stay. Everything was clean and the bed was really comfortable. The flat is really well located too, which makes exploring the city much easier.
Some things I think could be improved:
1. The bathroom door got stuck quite often and was very hard to open once stuck, so if you're hosting a guest that is by his/her own, it could be tricky to get out. If you're 2 people, you won't get much privacy. But I think it should be quite an easy fix.
2. I think heating could be improved as well. It wasn't bad, but I think that portable heater is not enough for the entire flat.
In general I was happy with my stay. Thank you and I hope you find these suggestions helpful.