We had an absolutely wonderful stay at Casa de Guincho. The location is beyond stunning; it's just up from the beach set among the sand dunes. The villa is on its own, with no overlooking properties, so it feels like your own private beach. It was exactly what we were after for a peaceful, relaxing 5 days.
Praia de Guincho is a beautiful beach. We loved just strolling from the villa, over the sand dunes, to walk along the beach. We were visiting in late November, and the weather was beautiful - about 20C and sunny during the day, and then the temperature would drop in the evenings. We liked just wrapping up in blankets to keep warm, but there was also heating in the property if you wished.
The villa is great for a couple or couple with small child. The kitchen was great, and had everything you need to make dinners in, if you wish. The outside spaces were great; table on the deck, bbq area and lounge area. It was a cosy home away from home.
We had decided not to rent a car for the trip, and were worried we'd feel isolated at the villa. But, it actually was easy to get around. Uber is relatively affordable, and takes only a few minutes to arrive. There's a bus stop and scooters available down the road, which we used to go into Cascais. It was a great place to explore Cascais, Sintra etc.
We would absolutely recommend it to anyone!