A small group of us stayed here for a month. Manuel's location is great if you want to have good access to Lisbon and Cascais, all while being quieter and more secluded. The proximity to the beach and the morning view is one of the best features of this listing. Cascais is a short drive, 45 minute walk, or 15 (fun) minutes on electric scooters by the boardwalk.
The Tapearia, Lamassa, Luisa's Place (pastelaria & cafe), and Supermercado Tradicional were all excellent neighbourhood gems. The neighbourhood had everything we needed for our month-long stay.
As previous reviewers have mentioned, the apartment does get cold in the autumn and winter months even with the space heaters (a common characteristic of a lot of older Portuguese buildings). So, do come prepared with the appropriate clothing should you visit in the off-season. Otherwise, the internet was dependable for 3 people to work remotely from and the apartment met all of our basic needs.
Manuel was a responsive host and we definitely recommend staying here!