The host met us with the keys at 2pm check-in time and gave us the wifi password. We were in contact throughout the morning to work out a time to meet and he provided us with very thorough public transport directions from the airport.
The apartment was a little smaller than the photos led us to believe, but it was clean and fine for one night's stay. The wifi did not work so well and there were drainage issues with the shower, but again this was ok for only one night. The apartment was in a great location, very close to the metro (but not noisy) and lots of cafes nearby. You could probably walk from Old Town. The apartment also felt very safe - three locked doors to get in.
Fine for a short stay.
Thanks Jan!