I booked 3 nights in Catarina's apartment for the end of our trip to Portugal.
It did not disappoint!
Catarina has a beautiful apartment, and the location is fantastic.
It's within easy walking distance from Avenida metro station, which is on the blue line, and it is close to the main centre of the city so offers access restaurants easily, but far enough out for you to keep the window open during the evening and not be disturbed by noise :-)
The apartment is full of character and personality, it's clean and offers everything we needed. There is lots of guides on things to do in the area which have bee left for guests, and we found this helpful as we didn't really plan our time in Lisboa prior to arriving...
Catarina does state it's a top floor apartment which in on a hill, and I'd suggest if you're not used to hills or stairs to consider carefully whether it will suit you! It was fine for us, but multiple suitcases or a pushchair could make access in and out more exhausting I'd imagine... absolutely worth the climb though, the view is spectacular!