Recommend this apartment, very convenient location. It has private bathroom, kitchen, and able to find everything inside this apartment (except microwave/washing machine).
Izumi & Francis always reply promptly and ready to help anytime. Useful information also provided in a folder for our reference.
P.s. tipz: there is no supermarket near to Sintra centre, so prepare to bring food (if you plan to do light cooking) when you visit Sintra.