@Bo6
The place blows my mind, wow!
You have gotten good advice here. I noticed that there is absolutely no mention of the bring-your-own linens in the house rules. If you still think you want to go through with having guests do that I'd certainly add it there to make it clearer. I
From a traveler perspective: if I had the good fortune and funds 🙂 to be able to take off sufficient time and go to your area, the last thing I'd want to do is be bothered with having to buy linens and lug them along with my other luggage.
I could understand if it was a rustic cabin in the woods, but even then... and the rest of your apartment is so amazing, I'd really recommend you re-think your present policy, esp. if you do supply towels? Makes it all a bit confusing.