Ana’s place is very clean and is close to lots of local restaurants and pubs. Public transportation is within 5 mins walking distance (15E to Belem and the famous 28E ).
The neighborhood is quiet and charming. On the house manual, there are lots of recommendations for what to see, where to visit and where to eat and drink, which is extremely helpful. You will have to climb some stairs to reach the apartment but overall it is a great place to stay in Lisbon.