7 great beaches less than 15 minutes from a Lisbon coast house for sale:
Cresmina
Guincho
Abano
Ursa
Adraga
Grande
Maças
Praia da Ursa - a 10 minute walk away from Casa do Avesso a lovely village house for sale in Azóia, Sintra, Lisbon Coast.
http://lisboncoast-houseforsale.yolasite.com/