We had an excellent stay in this apartment. The view on the river is your TV, day and night. It is a 15 minutes walk to the famous bridge Ponte Louis - along the river, very nice.
A small "supermarket" where you get everything for your daily needs is just 2 minutes away: leave the building right hand, take the small steps and go up the hill.
A place to recommend if you stay in Porto.
The communication was easy, fast ad friendly! :)