The flat is great. It's very well situated & was very quiet despite its position in a busy, interesting part of the city. Lots of interesting stuff & great bars/restaurants in easy walking distance. We loved it & wouldn't hesitate in recommending it to anyone.
The neighbour opposite was very pleasant & helpful, however it is useful to have the phone number the owners brother, situated locally, just in case of problems.
(My wife & I had a 'key incident'; due to a rather temperamental lock. With the aid of the neighbour and the owners brother, who responded in a timely way, we dealt with it. However it is worth being aware that the lock needs to be treated 'gently' to avoid this problem.)