@Caroline973 , As a guest I don't think I would particularly object if being asked to do it, but as a host i PLEAD with my guests to please NOT strip the beds. It is SO much easier to me to quickly scan for stains, apply a remedy where andwhen I can see the stain easily and then take it down to the laundry room. Also for me personally I have all white sheets, but a variety of be sizes - king, queen, and king single. When guests take the linens off and I find it much harder to keep sets together - I spend some time figuring out what's a queen, what's a king ( even with markings on the tags) For me personally guests doing the linen doesn't save me any time at all, rather it costs me time - sometimes a lot of time if there's a stain.
But every listing and every host has different ideas and values. If you really think it helps you, I'd be inclined to make special mention of it in your messages with the guests. I do this for things that I think are likely to get me pinged. For example, I'll say "Also, as per the listing description, I"m sure you've already read and realised this, but just reminding you there is no A/c ( honestly not needed the breezes are amazing) and kitchen and both bathrooms are far from state of the art. There is some cosmetic wear and tear. However they are routinely scrubbed and are clean and functional. If any of this bothers you though, do please feel free to cancel - you can cancel without penalty in the next 48 hours. " When they reply - "oh gosh, not a problem at all", I think, these are going to be the sort of guests I WANT staying in my house and I feel a lot calmer. If they cancel, I think, wow, dodged a bullet there. If they read what you say and go ahead with the booking anyway you are just slightly in a stronger position pyschologically somehow I think.
Obviously its not foolproof but I do think it helps to weed out the guests that might be disgruntled and/or not suited to your style of hosting.
Cheers