The best thing about this apartment is its location: it provides easy access to Barrio Alto and Principe Real whilst avoiding the noise and crowds of these areas. It is the perfect access point to Lisbon life.
We stayed here over Christmas and new year, and the flat was extremely cold when we arrived as it has no central heating (typically for Lisbon) and is unoccupied when not being rented out. However, Joao was extremely helpful in bringing round extra heaters when we asked, and within a day or two the cold was no longer a problem in the flat. He was also very helpful in our checking out, which was great.
The only thing that could have been improved would be having wifi available, but overall our stay in the apartment was excellent.