Great stay at Mario's place. Close from the center town with short walk from the metro station and grocery market open until 22pm at 2mn walk. The flat is very nice. The 5 bedrooms have each a window (3 on terrasse side and 2 on main street) and are very neat and confortable. A small terrasse to enjoy morning sun during breakfast. The living room is not very big but we could all fit in (we were 9 adult people). Since this is also the entrance to the flat with poor noise insulation, You have to take care about noise in the evening that can disturb the residents through the staircase. But the building itself is rather quiet, no worry. Surroundings are not too noisy in the morning despite the traffic (like anywhere else in center town of Porto, I guess). Mario has been supervising the arrival and the stay even if we didn't meet physically. Information has been enough to reach and enter the flat without any difficulties (the entrance door can sometimes be tricky to open since it is code based - no key what is very usefull for a big group like us-). Mario is providing a special feature to help Porto visitors: I will not say more and let You discover it ;-). All in all, we all were very sastified and I can recommend a good time in Porto in this place.