The Guest House is located on a familiar neighborhood, so a very calm environment. Even tough that can be a positive thing, it can also be an issue if you don't have a car. There isn't parking space inside the house or a garage, but it was very easy to park our car in the street (also free of charge).
I'd say is the perfect Guest House if you're going to do business in the area or if you're traveling with your family.
The house it self is like any other Guest House. It's a huge house where the owner lives there and has extra rooms. There's a door separating the family part of the house and where the guests stays, so that's cool. But if you don't like the extra sharing is important to know that the kitchen/dinning room is a common space with the family. Nevertheless there is a pool table and a tv room where the guest can socialize. In the house you can find a lot of flyers and maps about Sintra and the wifi has great signal, so you will have everything you need to plan your trip. The stay in general was a different experience because it was a Guest House, so not a lot of sharing with the locals. But José was easy to reach by SMS, he was always available for my questions and during our arrival he gave all the explanations about the house and the options surrounding.

Concerning the room, and that's the best part: the single beds are AMAZING!!! There is something magical on those mattresses, they just hug you when you lie down. We were so surprise by this amount of comfort in a Guest House, not even our mattress is that good haha