We are a family of three (one 16 month old) and stayed here for 3 weeks in early April.
Communication with the host was great and he was available to assist us with local recommendations and small issues that came up.
The location is great. 5 minutes to the farmers market, 10-15 minutes to various grocery stores, 5-10 minutes to the town center and beach. One thing to note is that the building is right beside a main road that has consistent traffic. There were often loud motorbikes, sirens, and general traffic that was disruptive to our babies (and our) sleep.
The unit is as-advertised. 3 bedrooms, 2 bathrooms. Enough space for a family of 4 to stay comfortably. Linen (sheets/towels) are very basic and investing in proper hosting linens would bring this unit to the next level. Bathrooms are tight but functional and clean. Kitchen has the basic necessities but lacks storage containers if you plan on cooking and storing food.
The wifi is excellent. I conducted frequent video calls without issue. The desk provided is acceptable but not ideal (is only 12 inches deep which makes it difficult to comfortable to set up your laptop and have space for your arms to rest).
Overall, pleased with our stay. The value was great (was low season) and served to be a great base for us to explore Cascais. There is 5 star potential here with some small upgrades and considerations. Would recommend with proper expectations set.