Physical Danger
There's not a whole lot of risk of getting hurt on the job at a B&B, at least not any more than in any other household. The kitchen, as always, might be the most dangerous place. You've got knives and stuff that's on fire in there, so you've got to stay on your toes.
There's also some risk if you're cleaning or doing some other household maintenance. These dangers are rarely lethal, though. If you meet your end while moving a piece of furniture, it was probably your time to go anyway.