First of all, Maria is a wonderfully kind and attentive host. She speaks very good english and is always up for a chat, but she also leaves her guests their space.
Her house is conveniently located 10 minutes away (by feet) from the old town and train station, where the buses for Sintra's main attractions start from.
The room was clean, with nice exposure (morning light, quiet neighborhood), and the shared bathroom was spotless.
Maria also shared some local knowledge and offered to prepare breakfast for us, on demand, for a small fee, including homemade raspberry jam and some of the best orange juice we've had in years.
Highly recommended!