Years ago it was pretty much unthinkable to dine after an evening concert in Symphony Hall, unless you happened to find a Hayes Bickford that was open all night. It's still not easy to find a place where you could relax and converse for a couple of hours without feeling rushed, much less being surrounded by floor sweeping, the overturning of chairs, and a glaring waiter. I do know a few places in the neighborhood that are open late, but I wouldn't recommend them. Brasserie Jo, however, is one restaurant—a five minute walk away—where I'd feel comfortable settling in after a concert. The main menu remains available until 11 pm Monday through Saturday, and a bar menu takes over until 1.30 am. It's also worth noting that lunch is served until 3 pm—a small blessing for us tardy folk and busy guests in the Colonnade Hotel.