Great apartment in a fun, hipster area!
We really enjoyed our stay at Ana's place - the location is pretty convenient - right next to Intendente if you want to jump on a train into the city centre, or if you want to walk, it's only about 20 mins. the apartment itself is comfortable and well-heated when you need it to be, with amazing views over Lisbon. My partner and I stayed there for 6 weeks, working remotely and taking weekends away around Portugal - it was perfect for what we needed. Ana even provided us with an extra desk to make things more comfortable for our jobs.
We would definitely recommend it here, although one thing to be aware of is if you don't like stairs, it's on the 4th floor, so keep that in mind.