This is a group of seven arriving in four hours for several days. So it is not like they just need one mask. I feel the request goes beyond what is customary. Since I don’t have a lobby or common space I do not require masks and therefore should not be expected to provide them. This is a personal item to be used outside of my Airbnb. I’m also not an errand service that can drop everything and run to buy them masks. In the end I know I will - it is not worth it to start the guest’s experience with a refusal to accommodate them. Do you supply masks for you guess?