Wonderful location, close to great restaurants and antique shops. Arek was very responsive and very helpful, even with last-minute questions. The apartment is a nicely decorated studio apartment, the perfect size for one person or a couple to relax in when you're not exploring the city.
My only gripe (outside of Arek's control) are that walls allow noise to travel. I would recommend earplugs if you're a light sleeper, the neighbourhood is quiet (and windows block most outside noise) but even a neighbour talking briefly the building hallway was enough to keep me awake. Despite this, I would definitely come back!