My wife, daughter (1y.o) and I stayed for one week in the apartment. There was a baby bed, bath and chair available. We also had a rental car and were very lucky to always be parked right in front of the apartment. The location was ideal for us, a 20min drive to the beach, 5min to the city center of Sintra or 40min train ride to Lisboa.
This place is perfect for people who are out the whole day visiting sights and come back home in the evening weary to take a shower and go to sleep.