My wife extended our stay in Porto another day and needed a place to stay on short notice. Mario's served this purpose well. It was clean, the two heaters kept the room warm, the check-in was easy, the bed was comfortable, the price was affordable, and the location was great.

One thing to note though is that this is a hotel room with a kitchenette, not a studio apartment. I don't mean this to say that the pictures or anything about Mario's posting is misleading, and I recognize that the line between hotel and apartment on airbnb is pretty blurry, but this is a building with several hotel rooms per floor that feel like (nice) hotel rooms. Maybe this is unimportant, and maybe airbnb has sufficiently changed from a site where you rent people's apartments, but I guess I still see the site as an alternative to hotel rooms.