Aside from the suggestions here, sometimes it's good just to have a few more people on the roster to help pick up the slack when no one else is available.
I'm a host who works with other hosts to do just that. Trash removal, grill clean/propane tank refill, guest prep - leaf blows, cover/uncover outdoor furniture - things that really help with that guest impression when they arrive and put the host's mind at ease instead of wondering if the trash is full.
I'm in the Commonwealth area. Feel free to contact me if your Air B&B is near there.