This is by far the best place we stayed in from Air B'n'B and through our travels overall. We would chose this over 5 star hotel any time. The house is very clean and very well furnished. The design is stunning. Do not believe the pictures as they do not do this place a justice, it is much, much better than it looks there. You have everything you might ever need to stay comfortably. Maria is an extremely nice host and is very accommodating. Check in is smooth and easy and she takes extra time to show you around and help with any questions you have about Porto. There are nice touches added throughout the house: perfectly matched towels and scented soap, coffee with muffins, some refreshments in the fridge and so much more. The place itself is in very quiet neighbourhood about 10-15 min walk to all the sights. We loved the fact the we got to get away from all the noise of touristy areas without having to take transit or taxi. It is worth mentioning that there is plenty of on the street free parking around making it perfect for anyone who is driving.
To sum it all up, you must try this place as once you set your foot in it you will not want to leave!