Hi jeanf,
My friend in F.L. responded. She gave two recommendations. Serafina and Sublime. Now my friend is a Florentine and she swore by the food at Serafina. That being said, I checked out the Yelp reviews, which I take with a grain of salt, and they are mixed but they do sound like the place is an authentic European restaurant. If you've ever been to Europe then you'll understand what I mean here. I would absolutely give it a go. It's on the water. Sounds delicious.
Sublime is a Vegan restaurant. Same for Yelp reviews. Sounds interesting. I also looked at a review for Riverside Market which sounds fun. The 500 craft beers were enough to catch my attention.
March should be awesome weather in Ft Lauderdale but beware you're going during spring break and all the craziness that goes with that.
Enjoy! -A