Maria is an absolutely wonderful host. My dog and I were extremely comfortable in our bedroom/bathroom, both of which were charmingly decorated, larger than I expected, and immaculately clean. Maria also gave extra special touches like leaving tea, coffee, fruits, etc. in my room, special items for my dog's comfort, and welcoming me into her kitchen and dining room with access to her food if desired for breakfast. I was so grateful for her picking us up from the train station and dropping us back off there when we left. She gave excellent recommendations for what to see in Sintra, and I happened to agree with her that Quinta da Regaleira was the best! Thank you so much for making us feel comfortable and welcome! I would definitely pick Maria's home to stay if I come to Sintra again.
Maria's home is best if you are not in a rush to pack all the sight-seeing in to a very short time, as it is a 25-minute walk from Old Town (mostly downhill to get there, mostly uphill to get back home). That said, there is also a bus stop 1-2 minutes from her home if you want to take the bus into town. It is a quiet area (except that when I took my dog outside, the dogs in homes we walked by barked and he barked back). But overnight, such a quiet and comfortable place to sleep.