Great experience. Someone was waiting outside the building to meet me, walked me through the flat (and showed me where all the appliance manuals are kept), and answered all my questions (both the ones I had at the moment and ones I sent later via email). The flat itself was great. Clean, well-furnished, plenty of heat and hot water, reliable WiFi. The only issue I had was with the shower (I couldn't figure out how to avoid soaking the floor). You can sometimes hear the rumble of trains passing by, but I never found it bothersome.