I know Neptune's Treasure has a room available, since we just had to cancel our trip in April.

BTW, I found out about Anegada Express on Walker's website. It's a new small ferry that runs twice/day and 7 days/wk (!) from Trellis Bay, but reservations are required. The afternoon departure of 3:30 is ideal for people flying in, and for anyone who can't coordinate with the regular ferry's MWF schedule.