We had a wonderful time staying in Carmen's house. We were a family of 5, my mother, wife and 2 young children. We spent 10 days in Cascais and had a great time. The house was perfect for our needs, as described, spacious, stylish and very comfortable. We loved the location as it is easy to get to Lisbon by either car or train (and although we didn't use - a taxi would be equally fine). The walk to the beach is superb and the local coast line, small villages and proximity to Sintra and Cascais mean that we always had something to do. The beauty of the house is that we had space to relax and take our time, enjoy a game of pool or just sit by the pool! Carmen was a great host and helped greatly. She was there when we arrived, showed us around and was there when we needed her. At the same time she made us feel very relaxed in her property and made us feel welcome. I highly recommend the property and the area - we had a great time and we will come back!
Plus - as a bonus I recommend the horse riding school a 5 minute walk away. Our 6 year old spent 3 very memorable days learning to ride there on their beginners course.