We had a great time at this flat. Conveniently located for Lisbon, Sintra and the brilliant beaches on the coast.
No large supermarket in walking distance so you if self catering you will need to plan when getting provisions. Some small local supermarkets with excellent fresh produce and lots of very reasonable priced restaurants. Sintra is €3 in an Uber from the flat which is great for evenings and there are loads of them, so we never needed to walk home.