Mario’s place is an absolute wonder. It’s pretty small, definitely made for just a couple but it’s got everything you could possibly need for a quick weekend in Porto! It’s a 2-3 minute walk to the Livraria Lello, one of the churches is right next to it, and it’s surrounded by restaurants and shops. Though the closest metro stop is 10 minutes away, you are 10-15 mins away from pretty much everything big (including the Luis bridge), the place is extremely central. Mario was incredibly diligent during our stay, answering no more than 10 minutes (sometimes 5 minutes) after I messaged him and was extremely helpful. For the price, it’s an absolute treasure in this beautiful city. My only note of feedback is that it is a little difficult to find the entrance even with maps, so once you start getting close I’d ask Mario for more specific directions but other than that, it was a pleasure staying here!