My family and I stayed there in July 2002 for 3 nights (2 rooms). We loved it. The location is very close to Monaco (like 500 feet), and the hotel has a free shuttle bus to the heart of Monaco. The hotel itself is quite nice. They have a large parking garage that costs 15 Euro per day. Getting there by car is tricky, but after you do it a couple of times, it isn't so bad. The restaurant is excellent.
Some of the staff can be just a bit snooty (this can't be avoided in France!). The unheated pool was small and not too comfortable. All things considered, though, we would definitely go back.
Bruce