I stayed at Dave and Steph's place in Cascais for four nights. I had a great stay while I was there. Cascais is much different from Lisbon and the area where Dave and Steph live is a few kilometers north of the city center in Cascais. They were more than happy to give me suggestions for taking the bus (very close to their home) to get to either the city or to go to Sintra (there's also a direct line close to them). The beach is also only about 30 minutes walking and there are several cool trails close to their home. I had a nice stay with Dave and Steph and enjoyed visiting Cascais for the first time.