The apartment is beautiful, the view and terrace are incredible, and communication with the hosts was excellent! Clean, spacious bathroom, and lovely extra touches by the hosts with books on local culture and suggestions for visitors.
I can only give 4 stars, however, as the bed was uncomfortable and, in my opinion, lacking-- there were two thin pillows, one duvet, no topsheet, and no extra blankets or pillows. A comfortable bed goes a long way when staying out of town, and this is one amenity that I look for in an air bnb. If you look for that too, I would consider another place.
Additionally, we are young and energetic but I found that the hill up to the apartment and the many flights of stairs was very cumbersome after a long day of trekking around the city! (This was mentioned in other reviews, but I wanted to mention it as well because somewhere more central which is easier to pop in and out would be something I would look for on our next trip to Lisbon).
Overall, a lovely apartment with good hosts, but an improvement could be made in the comfort of the bedroom!