Hrqls: Well, to stay in Cascais (Vila Bicuda Resort). you definitely need to rent a car, because our public transport is not trustfull. I guess the subway don't go until Cascais, and... you could only trust in taxi to get to Lisbon properly and come back by night. It's... I don't know, maybe 10 kms far away from the town. It's the "rich field" of Lisbon. Peaceful, but not the authenthic Portugal I think you want to know. Anyway, I'm sure it's great for you daughter.

About restaurants... you'll have them all over the country, it's no problem in Portugal! Cascais is plenty of them!

Anyway, if you want my suggestion... why don't you stay in the middle of Lisbon, so you can taste it's amazing "common day life"? It's delightfull, and Lisbon is even more charming for these small details than simply by visiting its monuments. You could drink a port wine at night, in a Fado's house... you could go to the market... you could find your "neighberhood café"... I'm sure you would love it! And... it's Portugal!!! We are very nice and comunicative people! You could stay in the more "international hotel", but in Portugal, you would feel at home the same.

Eating in Cascais (or in Lisbon) can be a little more expensive, but you can lunch and dinner out, here, for... 40 €, eating really properly, with wine. But for "eating vacations", you need to left Lisbon and come to the north... That's what I always do to eat as a king! :)

Just let me know when you come, maybe we could lunch together once, and that way I would assure you would taste real portuguese food! :)