Joao is a great host and the process was smooth from the booking stage to the check-in and check-out. Joao is very responsive and professional and made everything easy. He also provided me with a detailed manual on what to see with good recommendations (things to visit, restaurants etc.)
Location is very good in the middle of Bairro Alto with everything you need nearby. A lots of restaurants around and cultural places. The street is one of the few extremely quiet with no restaurants which is important to mention as Bairro Alto is well known for its nightlife.
About the apartment now: it is a bit small, especially the bathroom (be aware for tall/large people) but the space is well optimised. Great for stays with 1-2 people. Internet connection is also strong (optical fibre) which was extremely important for me as I worked remotely and needed strong internet access. Place was clean and tidy with everything in working order.