Quality live jazz and their lamb is amazing. Pair it with something from their good wine selection, and you have a memorable night in the making. It can be a bit touristy but not overwhelmingly so; it's more a function of being in the Old Port area. The ambiance is perfect for a romantic night out.
The one downside is, the service can be a bit slow on occasion. I've been a few times and had this issue only once.