Spent 3 nights in Carlos' place - superb location for visiting downtown Porto, and also Gaia (for the wine port lodges). Very handy that it's between 2 metro stops, especially for getting to the airport. Apartment was quiet (no noise at night), and immediately below there is a fab bakery for breakfast/lunch & pharmacy/shops nearby. This was my first AirBnB experience, and I'll be doing it again, based on this great first stay.