This is a really lovely, bright and airy flat in a good location. The main "bedroom" is on a mezzanine; there's also a sofabed in a separate room. Ideal for a family of 3 (or at a push 4); very comfortable for a couple. Everything you can think of is provided, including a washing machine (although we didn't use this). There's a quiet balcony facing away from the street at the back of the building.
We were welcomed by Manuel who showed us everything we needed, and texted us a useful list of favourite restaurants.
From the flat it's 5 minutes on foot to the nearest metro, or 10-15 minutes into the more touristy parts of town (often longer, as there's so much of interest in the way of small shops and restaurants on the way!). Coming back is uphill, but it's worth it -- the flat is cool and peaceful at night.
We had a great time in José's place. It makes a really good base for exploring Porto, and is clean, comfortable, and stylish.