We had a great time! Estoril is a lovely place to relax after a few days of visiting Lisbon. The location is good; the apartment is a 10 minute walk to the train station of Sao Joao and a 15 minute walk to the beach. We travelled with public transport; it takes around 50 minutes with the train from Lisbon to Sao Joao do Estoril. Also Sintra and Belém is easily accessible with public transport.
Shauna is very nice and hospitable, and the apartment was cozy and clean. We'll recommend it to family and friends!