@Stephanie . For me the unexpected isn't actually unexpected. Every host that is fully booked needs to have back up systems ready to go. For me, this has meant a storage area with backup duvet covers, bed linens, towels, dishes, silverware, glassware, shower curtains, bathroom rugs.... anything that a guest could stain, break or ruin, in its original packaging ready to be brought online on a moment's notice.
The washing machine, ah the washing machine, gave up the ghost during our second week of hosting. No time to find a sale or bargain for the best price. Nope. We simply needed to research which machine we wanted, find it, and have it delivered as quickly as possible. I don't have a backup fridge, for example, but I know where I would go if it was required. Last week, a guest took apart our bathroom sink drain and the set screw went out the pipes. Who would have thought we needed to have a back up? I didn't. We have ordered a replacement, plus one. I will always have a back up going forward.
I don't have a list of emergency folks for guests since I live here. There is no way I want guests having anything to do with home maintenance. Gosh, some of them have trouble finding the bus stop! Can't imagine allowing them to negotiate with a plumber or electrician. I shudder to imagine such a scenario.