@Mark116
I hear you. I have never asked guests to do laundry before check out. Hosting long term guests, however, means that they do have the option of doing their own sheets/towels while here or paying me a small fee to do so. I will probably rethink this strategy as many say they will do it and then never do.
I would also not offer access to the washer/dryer if I still hosted short stays. When I did, I began charging a fee (not for them to use it but for me to do their laundry) for the same reasons you stated. They break stuff and it's not funny when that is the washer/dryer. People were really weird about this. The fee was so low (probably a third of what they would pay at a laundrette/laundry service), but some got super annoyed, even though it was stated in the listing.
Later, I change this to simply state that the washer/dryer was for the use of long term guests only. Again, people ignored this. Honestly, if I didn't host long term guests, I would just remove that amenity completely, but long term guests really do need to do laundry and it's a bit of a deal breaker.
Meanwhile, washing machine is broken. I have had two engineers over and am now being messed around. I have no proof that it's anything to do with guests, but the machine was being overused so much right before it broke, especially by a guest whose luggage went missing before she got here. The issue identified by the engineers does seem to be caused by excessive wear and tear. The machine is only a couple of years old and not cheap at all.