We enjoyed a lovely four days at Top of Opo, a seventh-floor apartment with a spectacular view of the last Porto bridge over the Douro. Sunset and wine on the balcony is not to be missed! The greatest recommendation we can give this apartment is the attentiveness of Diana to our requests for booking tours (port wine cellar, Douro River cruise, car to the airport) and to any concerns we had during our stay. Every text or email was answered immediately. The apartment is beautiful, clean and well equipped -- so comfortable for two couples. Thank you, Diana!