After much research, I’ve finally settled on staying at River Bend Farm B&B when we are in Williamstown, Mass. next month. I was taken by its historic charm, location, and price. It’s a 1770 Colonial home – “magnificently restored” according to one review with only four rooms – and two baths to share. It’s a mile from town and costs $134 a weeknight (including tax….which is good for the pricey Berkshires.)