Andrew and I went there four years ago. It's beautiful, but be forewarned: There is a LOT of stair-climbing required to get to the monastery. The little town that supports the site is very quaint, as well (one steep, winding street lined with small shops). People live there, which could be both very cool and very isolating. We just went for a day, on a chartered tour from Paris. The French countryside was beautiful (Normandy). It would have been cool to spend the night.
On the way back, we stopped for an evening meal (or dinner, or supper, or tea) break at the Normandy museum for American soldiers who died there during World War 2. The museum was closed except for the large lobby, where the dining tables were set up, but we managed to pick up some interesting books about that, as well, at the gift desk.
