We just spent a month in this flat, where we felt like home. It is a spacious flat (we were just two people, but there is plenty room to accommodate more), located in a very nice part of the city centre, in walking distance to Avenida da Liberdade and Principe Real, for instance. The views from both balconies are also great.
The flat has all the amenities for a pleasant long or short stay (fully equipped kitchen, including dishwasher, air conditioning - although we barely had to use it as there are plenty windows, tv and wifi). The decoration and cleanliness were also impeccable.
The host was very nice and always available to help with anything needed.
The location is convenient to get to places either by foot or public transport. However, given that it is in the city centre, car parking can be complicated. So if you plan to hire a car during your stay here, I recommend having a look at the website:
https://www.emel.pt/pt/
We hired a car for the month, and it turned out to be ok. Here's what we did, in case it helps: most of the time we were away during the day, and parked the car in the evening in Praça da Alegria or nearby (5 min walking distance from the flat), where it is free from 7pm-9am (and also during weekends). In the few days we didn’t use the car, we parked it outside the paying zone, which was about 2km away from the flat. We didn’t mind the exercise though - a nice 30min-ish walk going through Jardim da Estrela.
In a nutshell, we highly recommend this place, and we hope to go back in the near future. Obrigada, Catarina!