We had an amazing stay in Daniel's place. The apartment itself its very modern, but feels homey at the same time. It was very quiet even though we were there during a busy time (New Years Eve!).
It's located on a street that parallels the main city square, and is about a 5 minute walk from shops, local food, an ATM, and bars. There is a small market just around the corner and a supermarket just a bit further on. The street is quiet and the building is very secure.
Daniel was super great and very helpful. He recommended lots of his favorite places and even sat down with us to mark out a map of the cities top attractions.
This apartment makes it so easy to really explore Porto, and I would stay here again in the drop of a hat. Extremely pleased with the place, the location and the host.