The flat is in a really great location. Easy to get to from the airport (metro E to Trindade and then a 5 minute walk to the flat), very well decorated and had everything we needed. There are many bars, restaurants, shops and bakeries near by and is right by one of the main monuments - the town hall.
There is a guide book which was really useful and gave us some tips on how to spend our time in Porto.
It was wet and cold during our stay however with the heater in the flat it was always warm enough inside.
The host was great with communicating and was there to greet us as soon as we arrived.