This Gaia apartment is great. It is absolutely beautiful with very stylish touches all the around the place. The layout of the apartment is such that you'd basically have 2 full apartments with one large and one smaller kitchen, a few bedrooms and extra day bed spaces in the sitting areas. You could definitely close the door between the two spaces and have privacy between a family or two couples/small families. Before hand, Mario answered all our questions about arrival and there was someone there to meet us. They left treats and gave us a bit of an info session. The apartment is near groceries, shopping, train lines, etc. You can easily walk to old town Porto or hop on the metro. As others mentioned, it is not very quiet. The neighbors and street do make a bit of noise (including dogs and music). I would definitely say, it was a great place to stay.