This flat is a must-see! We cannot recommend enough Rafaela and Celio's apartment.
The check-in and check-out was super easy, Rafaela was there to welcome us, and we just dropped the keys in the mailbox on our way out! The flat's location is just perfect: bang in the city centre (but not in the busiest, crowdy, loud streets), with an amazing bakery and all sorts of bars and cafes just downstairs, even the buses (public and tourist bus) pass just on the street. There is also a Luggage Store at the shop downstairs (in case you arrive/leave outside check-in/out hours)
PS: Don't forget the flat is on the 3rd floor (no elevator) - not an issue at all if you are fit and keen, but to keep in mind if it can be a difficulty for you.
We also recommend Noshi cafe for brunch and breakfast-lunch, it is 1min walk and amazing natural food. The streets just behind the flat also have the most adorable cafes, tapas bars and boutiques. All in all, you are 10min walk from the closest tube station (Trinidad, which links to the airport in 30min) and the first historical sights start literally 30sec away from the doorstep :)
Obviously, the flat is adorable, so romantic and cosy. Everything we needed is there. There are comfy sofa and armchairs, and plants everywhere. The flat is oriented on the backyards (not on the street), which is a big plus in Porto, and had black-out blinds. Results: it is quiet 24/7, and I had one of my best night sleep !
The kitchen and dining area has everything you need to make food and have a lovely breakfast inside. Teas and coffee in the kitchen, and even some Porto wine to taste :) There is no TV (but excellent wifi), which is way better, we could just listen to music on the cool sound system, make tea and chat all evening - which we don't always get to do every day as a couple.
The flat is also decorated with a lot of taste, you can tell that the hosts have spent time mixing all the modern necessities with quaint, original and hype furniture and accessories. This was the best sell for us: we felt at home the minute we walked in. We just wished we could have stayed longer !