The apartment is well located in downtown Porto, it's clear white so it helps you relax very well. Mario was an excellent host and I totally recommend you staying in this house if you are considerating.
The instructions were clear, although I knew the city well I appreciated the map he left us. Also, there are lots of magazines with tips on the table for you to go and explore the city.
In general I rated 5* place and i'm very happy I've stayed here.
Thank you for the experience Mario.