Week-long vacation with the grandparents with swimming?
I'm looking for suggestions for a place to spend a week or more this mid-August with a family of four and one set of elderly grandparents (probably 3BR 2Ba). I'm hoping for something within several hours' drive of Berkeley where the pace is slow, there is natural beauty, lots to do, an abundance of reasonably-priced vacation rentals, and finally, a calm, warm-enough-for-swimming beach on a lake or river for shaky swimmers. Is this pie-in-the-sky? So far we have already tried Pinecrest Lake. I'm wondering if the Russian River would be a good choice? We may not be able to commit until July, to further complicate things.
Thanks in advance for any tips.