This is an excellent place to stay. It is good value for money if you are in a midsized group. The locations is great - right on a truly delightful square with great bars and restaurants and just down a short walk up to on of the main streets of Lisbon with excellent restaurants.
The flat, itself is charming - a real sense of Lisbon in the early part of last century. It’s solidly built, very secure and nicely decorated (for a mass market rental - it’s not someone’s actual home) with vintage furniture. There’s plenty of space (and enough bathrooms).
The only snag for us is that you have to go to the offices of the holiday rental company that owns the flat, which is elsewhere in Lisbon - at the bottom of the hill up to Baird Alto - whereas we are used to being able to go directly to an Airbnb. This adds an extra inconvenient step in the process.
However, we would not hesitate to stay at this place again.