This apartment's best feature is definitely its location! Very central to Bairro Alto and Chiado, and close to the metro for easy access from the airport or train station. Great for exploring several areas of Lisbon by foot. Lots of space as well. Check-in was easy, and the host was flexible about meeting us at an agreed upon time. The apartment was generally clean and had what we needed, though it took some figuring to get some of the appliances to work.
Only item to note is that due to the location, this is not a quiet spot. At the time of our stay (October 2019) there is also construction going on in the adjacent building, and if you're a particularly sensitive sleeper they seem to start pretty early (and the parties in this neighborhood seem to go pretty late). Definitely not a deal breaker, but presented as an FYI!