The very little flat close to Trinidade is very nice and in a good central position in Porto. It is perfect for when arriving from the airport. If you arrive late in the eve, there is a 10€ more to consider for the agent to come and welcome you. The welcome was very good with a map with some indications for key places to visit. I was promised an email with suggestions for a tour that though never arrived. The little flat has just been renovated with a very good taste, but not being a private flat, but just a renting flat, if looses a bit of the charms of living in some other's place... also the equipment and key ingredients for cooking like oil or salt were missing, so it gets a bit the feeling more of a hotel room. Said this it worked perfectly for what I was looking for and given the area there was a good silence in the night.