We had a fantastic stay in this apartment in Cascais. Communication was excellent. The apartment was spotlessly clean, and it had everything you could possibly need. We dined on the large outdoor terrace much of the time. We used the pool most days for a quick swim. It was quite large and very clean, but the water was a little cool. However, it was the first week of October.
Cascais is a beautiful town, and the apartment is in a great location. It is a 30 minute walk to the town centre or the train station. We sometimes got the M27 bus right outside the apartment. A round trip in/out of town cost 2 Euros.
We visited Lisbon for 3 full days. There is a regular train service from Cascais which takes about 30 minutes. We had purchased the Lisbon Card for 72 hours costing about 42 Euros. This included free travel from Cascais, unlimited free travel within Lisbon, and free or discounted entry to many of the top attractions and museums. For us this was excellent value and very convenient, but I would suggest you do your own sums depending on your plans.
We had a hire car to travel to/from the airport and to visit other places outside Lisbon eg Sintra and Guincho Beach. The secure garage space with the apartment was excellent.
Right outside the apartment there is a kiosk run by the local council, where you can hire basic bikes for 2 Euros per hour or 10 for a day. You can also hire electric bikes and electric scooters from the same kiosk.
Overall, I would highly recommend this apartment and the town of Cascais.