We really enjoyed Susana's place. It's location is perfect for exploring Sintra and beyond. The Pena and Monserrate Places as about 10 minutes drive. Quinta da Regaleira is 20 minutes walk, which is great since there is so little available parking.
The three rooms have enough space to fit a big family, or two families. The bedding was very comfortable and stylish. The kitchen was well equipped and we cooked many meals, though there are several nice restaurants within walking distance too. The pantry was stocked with espresso capsules, so we could get a nice start to the day without much fuss.
Susanna and her mother Esperança, and her mother were all very accommodating and helpful.