I am a little bit late to the game, but I just wanted to add my two cents regarding this.
There is an additional benefit for you to go in regularly (1x/week, or whatever you agree on) to clean/change outt linens. It serves as a way for you to be able to check the overall condition of your place fairly regularly. If food is left out (which may attract bugs), or the faucet is left dripping, you will be able to catch those problems much more efficiently (and gently communicate with oyur guest about them) than if you didn't see the place at all for 2-3 (6?!?) months.
I would recommend it just to set my mind at ease.