We have stayed 100s of nights at many nice Airbnb's, but this has been our favorite Airbnb ever!
A nicely remodeled top-floor apartment in an older building so it feels both historic and comfortably modern. The apartment is light and bright, with views of the surrounding red tile roofs of houses below, a nice small patio for afternoon coffee, comfortable beds, great soundproofed windows, electric blinds for nice and dark living room ... living space was perfect for our family of 3 (2 adults & 1 teen). Good amenities (nice espresso machine!) and kitchen, good amount of dishes etc.
Location is exceptional - a very local feeling street just at the edge of the most touristic area of Lisbon so that you are super close to the heart of the city, but just out of the hubbub of it so it's quiet and comfortable.
15 minute walk to the waterfront, 5 minute walk to metro or bus - very very easy to get around. Great restaurants right in the neighborhood, so no need to go far at all. Reservations almost always a good idea because the good places book up.
João was a great host, extremely helpful and quick to reply - definitely went above and beyond for us during our stay. Highly recommended. Would stay here again in a heartbeat.