We really enjoyed the 1 night we spent at Sonia's place in Sintra & highly recommend staying here if you're interested in spending a night or two in Sintra instead of taking a day-trip from Lisbon. Sonia was very easy to communicate with & flexible with us when our initial arrival time changed due to shifting train schedules.
The apartment is lovely, with old-world charm & amazing views! Sonia went above & beyond in offering to let us store our luggage in the building after we checked out, so that we could make the most of the rest of our day in Sintra before we headed back to Lisbon, which we greatly appreciated.
This is a wonderful spot up on the hill in Sintra & shouldn't be missed!