PERFECT location, beautiful view, and brilliant use of space for a studio apartment. The apartment is so close to the pedestrian bridge, the Ponte Dom Luís I, which crosses the Douro River to Porto. Although the bridge was under repair, there was still pedestrian access. Immediately on the Porto side is the funicular to take you uphill.
Jorge and Celeste were quick to respond when I had parking issues (recommend look at the map they provide!). We had everything we possibly needed in the apartment including body and hair products as well as kitchen essentials.
We enjoyed staying in the quieter Gaia area, had a fun port tasting of various port labels, along with chocolate pairing, 10 euros each, at WOW, an easy walk from the apartment. The mini Prego is also a walk away.
My husband is Celiac and we were thrilled to get fresh bread and pastries at Celicias, The Gluten Free Company, a 40 minute walk into Gaia or a 4 euro Uber fare (near major supermarkets, as well). The Spice Art Indian restaurant, also a longer walk or cheap Uber fare, was also a great find; the chef came out and talked to my husband to reassure him he had a great choice of most items on the menu (and it was the best Indian food I have eaten).
On the Porto side we ate at Tapas 65 and the server was great with GF recommendations.
From this apartment one can wander the street of Gaia and Porto and then return to a beautiful restful view. We were lucky enough to experience a thunder and lightening show in the middle of the night!
My recommendation is you carry as little as you need to (keep most stuff in your car, if you have one) because the stair flights are steep.