We really enjoyed our stay at this apartment!
The location was great; the apartment building is located on a quiet, small street just a block from the action. We felt we could easily walk to any sites we wanted to see (keeping in mind there are hills in Porto!). The apartment itself is beautifully and simply decorated, and outfitted with the amenities we needed. The double doors to the patio and yard are a nice addition, too. There was construction nearby, but it didn't bother us, and it was a quiet place overall. I personally wouldn't park on this street, but find a parking garage in the area if available.
The hosts were very responsive and communicative, and checking into the apartment was simple. We would definitely stay here again next time we visit Porto!