Earlier quoted context omitted.
ultimately people prefer not to stop and think about the fact that hotel beds are kinda gross, since there's really no alternative if you want to travel to a place where you don't know anyone. but even if you do acknowledge this, it's not nearly as bad to sleep in a "dirty" bed for a few nights as it would be to own one and use it every night.
I once met someone who always traveled with something a bit like a thin cotton (silk?) full body sleeping bag (like a mummy bag). Idea was you never physically touched the hotel bed. It was apparently expensive. The funny thing to me was the she stayed in high end hotels pretty exclusively who I think you can at least be taking a fairly aggressive kill-it-with-bleach approach to laundry. I wondered if there was a wal…
They are made to go into sleeping bags, and I love mine for that use case (less sweat and dirt in your down bag), but I have also used them in dirt cheap hostels.
In one seedy hotel in Italy several people in my party had a lot of bedbug bites, but I can't say for sure if it actually protected me. I expect I was probably just lucky that there were none in my room.
Still, it's a little over 100 grams (less than 4 ounces) and it makes dirty mattresses in shitty hostels bearable.