We finally made it to Guen Mai on the next to last day of our vacation. It was such a pleasant surprise. The food is delicious and low fat (which is often hard to find in Europe or anywhere for that matter). Plenty of vegetables, beans and a juice bar. They are vegan except they serve some fish. It was also nice that very few things on the menu contained soy. We have soy allergies and generally are restricted to only a few things on the menu of European vegan restaurants but here was different. We highly recommend Guen Mai.
Just as an aside - be sure to check you receipt. She almost charged us 400 euros instead of 40 euros on accident (we do believe it was an accident - she said she couldn't see it because her eyes are no longer young) and we had to wait for 45 minutes while they figured out how to reverse the charge.Pros: lowfat, delicous, lots of fruits and veggies
Cons: check the accuracy of your charge