ditto the above on noticing you were reading it and can't seem to find it, where did you put it before you checked out? ... don't wait. assume it wa a mistake and that it will come back. or maybe you will get a surprise and you will find it elsewhere. i would not include a link of where to buy it ... that to me would imply you think i took it. maybe another guest saw them reading it and took it.
i had a hand crocheted (i think) throw go walking after a guest checked out. i didn't love it but it was a wedding gift from a friend of my late husband and i felt all squished inside thinking that someone took it. i had it in a guest room (mistake) because it looked nice in there and wasn't sure when it had gone missing ... didn't know who to contact. in the meantime, all areas under beds and behind furniture got a thorough cleaning as we searched.
a few weeks later, it arrived in the mail with an apology ... odd to mistakenly pack up a throw but i was thrilled to have it back.
hard lesson to learn ... if something is very special to you, it mustn't be in guest areas. that's just my two cents.
i hope it turns up!