This is a fantastic apartment. This was my 4th stay in Lisbon and 3rd time on the same street - Travessa do Cabral - but this apartment is by far the best.
The location is great - close to the bars and restaurants of the Barrio Alto and Chiado, but also the Time Out market and the train station in the opposite direction - but be prepared for lots of steps up and down the hills...!
The apartment itself has good facilities, comfortable beds and two balconies with views of the city down to the river. The hosts, Ana, was very clear in all communication and met us at the apartment on arrival. We were able to check in relatively early in the day, which was useful, as well as leave our bags for a couple of hours on check-out.
Overall, highly recommended.