Good location, just a few minutes walk from the metro station and downtown. Great check-in service - they received us and spent some time in the flat to show the amenities and give some tips about the city. There is a very nice cafeteria downstairs as well as a Supermarket in case you need to buy anything.
João’s place is perfect for 2/3 people. It can be a bit tight for 4 people but with a beautiful city such as Porto you won't spend much time at home so that's alright :) The place looks brand new, everything is clean and organized. It can get quite hot in the flat during Summer days but there is a big fan available to cool it down.