Well first of all, if you have only visited Paris a couple of times, you really haven't visited Paris completely yet. Not by a long shot. There are at least a dozen world-class high-end hotels there and loads of great museums and restaurants.

But if you really want to get out of town, try the Four Seasons in Provence. It would be an entirely different experience than Paris. It will be quite hot in August, but that will be true most anywhere in southern Europe. Book now as August is the high season for the south.