Positiv: Filipe is an extremely caring person and ready to help. He gave us good tips about the region!
The location is very near the train and bus station and the connections are very good! It is 10 min by feet.
Just note it is note Sintra station but Portela station, 5 min far from Sintra station with the train. But you can easy go walking to Sintra center. Just 10min walking and more 10min to the historical center.
Negativ: the mattress is hard (take care who don't like it) and the bed is noise. The apartment is in the 4th floor and there is no elevator.