Rui's place was great! I never actually met Rui, but Catia and Ricardo were very accommodating. They were very quick to respond to any questions I had and Ricardo gave me some nice suggestions on restaurants and sites to visit. The apartment was very clean and had nice accommodations. The views from the patio were amazing! The location is awesome! The apartment is very close to the Douro River and the Luis Bridge. Any other sites you want to visit in Porto are a short walk away. Would highly recommend staying here!