We loved Porto & Rui's apartment. :) One thing to note is that the tourism company Feel Porto controls all bookings to this apartment so their staff respond to all emails. We loved it though because they made everything so easy for us. We arranged a private transfer to & from the airport through them & the driver, Paulo, was on time (in fact, early!) & professional. Reinaldo checked us in & gave us lots of great welcome information. When we had some issues with noise on our first night (we could hear the neighbor's TV until 1 AM), Reinaldo brought us an electric fan for background noise which solved that! They always answer emails super quickly and were friendly & helpful.
The location was perfect for us. Close to everything & had an amazing view! There was even a security system installed which you could set every time you leave which made us feel our belongings were safe.
We are now in love with Porto! We would definitely stay in this apartment again! :)