My two friends and I stayed at Ana and Paulina’s flat for 3 nights. It was clean and comfortable, just as described and is conveniently located in the Barrio Alto/Chiado neighborhoods. We were welcomed by Paulina upon arrival and she gave us a quick rundown of where things are and how things work. Communication was easy and Paulina gave clear instructions a couple of days before our arrival, so we felt well-prepared for our stay.
We did not take public transportation, though there is a bus stop and tram stop just a stone’s throw away. Restaurants, pastelerias, a mini-market, bank and mailing center are all within walking distance. Just be mindful of the one flight of stairs and short, but steep walk uphill. The flat is very close to nightlife, which can be a bit noisy if you’re in the living room, but not noisy enough to disrupt sleep in the bedroom. The light from the bathroom also spills into one of the bedrooms, but that is an architectural detail which can be mitigated with an eye mask. The washing machine worked great, but would have liked an instruction manual.
Overall, I would stay here again and would recommend Ana and Paulina’s flat for a stay in Lisbon!