We (2 of us) stayed in this apartment for 5 days. The communication (email and mobile/Whatsapp) from the start was great from Teresa and her team from suggestions and recommendations to coordinating our arrival and departure.
The apartment was a short (5 min) walk from the Santa Apolonia train station with Metro/suburban train links. It was easy to get to and from the airport to this station. It was in a quiet part of Alfama but also very close (2 mins walk) to good restaurants, bars and cafes.
The apartment itself was clean, had a nice double bed, sufficient lighting and basic kitchen facilities. I would recommend this place if you are visiting Lisbon and would like to stay in Alfama.