My sister and I had a pleasant stay. The apartment is relatively exactly as portrayed in the listing - very small and intimate (ideal for 1-2 people), ideally located in the middle of Alfama. We came into the AirBnb and had all of the amenities we needed (AND Rute provided a bottle of local wine which was a generous touch).
Three areas of caution: 1) Upon arrival my sister and I were locked out of the Airbnb for two hours trying to get in touch with Rute for the combo to the lockbox (even though I had already reached out 1-2 days before arrival so we wouldn't be put in that situation). 2) The patio in the pictures looks like it's private, it's not. You really can't actually eat/have a drink there because you'd be blocking other tenants from entering the building. Nice view but not usable. 3) No air conditioning. It says this in the listing but just wanted to re-enforce this as I'm sure some people will overlook it in the listing. Rute provided a fan in the bedroom and we opened the window in the living area at night when we were relaxing so it wasn't too bad.