I'm reading a series at the moment called the Earthsong trilogy, which starts with The Year the Horses Came.
It's nothing deep, it's set in post-ice-age Europe, with Goddess-worshipping tribes of peaceful folk. Sex is about pleasure for everyone, PIV is seen as incidental to the rest of sex, women are honoured no matter what their size or shape, the society is matriarchal..... all very lovely and idealistic.
Then some nasty patriarchal warrior nomads come along and spoil everything
.
The books probably don't have too much basis in reality; I doubt a society has ever existed in which women have truly enjoyed complete equality.
But I'm certainly enjoying reading them and imagining it was so. If you'd like a little light escapism with some lovely images of how life should be, I highly recommend them.