Greetings, Grace, and a warm welcome to Birdforum from Admin and the Mods!
I'm envious of you already -- I've never visited Pelee, although I'm only about 4 1/2 hours away (May is also my busiest time at work and prime warbler time off is difficult, unfortunately).
Consequently, I can't offer you any good advice about B&Bs or anything else at Pelee, but someone will come alone shortly, I'm sure, with some. The advice I CAN offer is: as soon as you find a good place, RESERVE NOW! Pelee is a North American Mecca, so good spots are probably booked very far in advance.
In the meantime, I hope you enjoy your time on the forum -- it's a great site, very friendly and full of all kinds of bird-related information from folks happy to share.