@Andrew172 While I don't think hosts should be forced to offer any amenities past basics like toilet paper and soap, and should be able to offer what they want as long as the guests are clear on what is provided, I have a hard time understanding why most of the hosts here are so upset about providing basic linens.
You say it's 20-30 minutes on and off the Island, but your listing says there is a washer and dryer. So why would a linen service be necessary? You could require your guests to start a load of wash before they leave, when the cleaner arrives, she can transfer that load to the dryer and start another load ( this takes maybe 5 minutes?) and start her cleaning routine, going back to transfer that load to the dryer at some point. Might add a maximum of 20 minutes to the cleaning time. Of course there is the financial outlay of the cost of the sheets and towels to start with, but after that, I don't see the big deal if there is a washer and dryer on the premises.
And I can assure you that the majority of hosts do not use professional equipment to wash the guest linens- they deal with them just like they deal with their own laundry. A dryer gets hot enough to kill germs. None of my guests have gotten any dread diseases from the linens I wash in cool water and hand out on the clothesline to dry in the sun.