@Tricia3030 As a fellow traveller, I make sure my insurance plan covers loss and destruction of personal belongings. There are limitations to the value, but of course I don't travel with anything expensive or irreplaceable.
I'm no legal expert, but I would point out that if you choose litigation, you have a very weak case if you can't demonstrate that the bedbug infestation was caused by negligence; I doubt you can do this unless the guests before you mentioned bedbugs in their review. If the prior guests encountered no problems, the host could counter with the claim that you brought the bedbugs with you, which would make your legal misadventure much more expensive than your vacation. Either way, as a the host will be bearing the cost of fumigation, lost earnings, and possibly replacing furniture - something to consider while mourning the loss of your suitcase.