We had a nice time on our weekend in Sintra, but decided not to spend too much time at the flat. It was suitable for morning routines and sleeping, but not great for bedtime with our 3 y/o. This is a converted garage, made into a flat. Both bedrooms have sliding doors and the second (small) single bedroom‘s door is glass (not ideal if you want to put kids down early and relax in the living room). We also had issues with delayed communications, but nothing major.