If you're into an usual amount of space is a city where everything is rather tiny, this place is the one. It's very clean, the bedrooms have AC, they have a complete modern kitchen and the living space is beautiful.
It doesn't have a patio or balcony but on both sides of the huge living area they have big windows that open completely and you can sit by one of the big windows giving almost an indoor-outdoor feel (just be mindful of some flies that can get in and keep the bedrooms closed).
The wonderful hosts met us as soon as we arrived and showed us the house and were quick to respond when we messaged them for a question.
Porto being an exceptionally walkable city, the location is very good as everything is between 1 and 25 minutes away by foot. It's close to everything but not on a busy street so you get a good night sleep without too much disturbance.
Loved this place a lot!