Light Bistro [1], while perfect for a date, would be a great place to bring a group of friends to share some wine, appetizers and dessert.
Links:
[1] http://www.lightbistro.com/
[2] http://www.examiner.com/x-7351-Exploring-Cleveland-Examiner~y2009m5d20-Light-Bistro-Delights-with-Inventive-Local-Food