Wondering whether someone could help us damsels in distress!

We are four 18yr old girls looking for a good time BUT not just clubbing and beaches, but some places we could actually visit during the day aswell
We want a place with nightlife (bars, few clubs, restaurants), nice beach, but also somewhere where we can sight-see etc.
Just a bit confused because we want somewhere lively BUT not too lively if you get what i mean
Thinking of going this summer (about early July).
THANKS SO MUCH FOR EVERYONE WHO REPLIES TO THIS!!!

Laura