The apartment of Luis & Tiago is in the suburb of Valbom, close to the eastern edge of Porto. It is a short distance from the A1, which is the main artery driving up from Lisbon. It is a toll road, costing 21.25 euros each way. I found out later it would have been cheaper, when gas charges are included, to fly up from Lisbon and rent a car at the Porto airport.
The apartment is the penthouse of a 4 floor walkup on a hill from which there is a great view of Porto. Parking is available in front of the building. It is large for European standards, and has been completely refurbished. The bedroom is large with a queen bed and good storage. There is a private bath that was spotless, like the rest of the apartment. Shampoo & bath gel were present.
I had the use of a desktop computer with printer and washer.
Tiago & his partner Andreia were wonderful hosts, both fluent in English and sensitive to my needs and privacy.
There is a large supermarket 5 minutes away by car. I do not cook, so I am out for dinner at night. I didn't see any restaurants for Valbom in Trip Advisor, but it was only a short ride to Porto and Vila Nova de Gaia, after a rest following my daily activities.
Porto is a great place to spend time in Portugal, and my experience was greatly enhanced by my stay at the apartment of Luis & Tiago.