10/10 would stay again!
Location: Apartment is at the edge of Barrio Alto, close enough that it's a short walk to the busy bars and restaurants but they won't keep you up at night.
Apartment: The apartment itself is lovely and bright with multiple balconies and windows. Bed was really comfy. I was remote working and the WiFi was perfect with no issues. Kitchen has everything you could need. Theres a supermarket less than 50meters away too. I'm going to truly miss the shower! It's true to the pictures.
Ricardo is an absolute gent of a host. Of my 10+ Airbnb hosts he was easily the best. He met us the night we arrived. Gave us great recommendations and was in touch to check everything was going well for our stay. We stayed a month and there was some construction work one of the weeks in the above apartment. It was not in Ricardo's control but he offered to pay for a desk at the co-working place around the corner for us to not interfere with our work (we didn't need to take him up on his offer as the noise really wasn't too bad).
Potential con's: For light sleepers there is a tram that goes by the front of the house from around 6/7am to 10pm. Wasn't an issue for me but I know it might be for some.
Will happily stay here again next time I'm back in Lisbon!