The ambiance is comfortable and casual. In Summer, the outdoor patio is a good seating choice. It can be hard to get a table (and don't let them seat you by the front door!), but if you aren't in a hurry, it can be worth the wait. The food is usually very interesting -- lots of locally-produced and seasonal items done up in appealing ways. The beer choices are above average (good Belgian selection usually). The one drawback (other than prices that are just wee bit high) is the service -- seems to be a lot of turnover in the wait staff and service has been uneven at best. We've had wait staff who were very friendly and attentive, but others who should have been asking "you want fries with that" at some fast food dive. Still, if we're in the mood for a bite and a beer before or after the theater, Saint-Ex is on our short list of enticing places.