This is my second stay at Manuela's "Cosy Loft," and my needs are particular, so I'll address this with what a typical holiday-goer might want.
The place is a studio apartment with a small fridge and two-burner gas stove, opening onto a nice garden. For a solo traveler or a couple who want to be able to do some cooking for themselves, it's probably the best bang for your buck option in Sintra.
Beyond that, the location is stellar. The village is the next one over to Sao Pedro, which in turn is basically an upscale suburb of Sintra proper. It's very close to two highways, one leading to Cascais and the other straight into downtown Lisbon. From here, you can drive to just about anywhere anyone would want to go in the region in 30 minutes or less. Parking is easy. If your plans include a rental car, it's a great spot.
Finally, if you are a dog lover... you'll be very pleased.