I discovered mound on my suitcases, in one bag I had some photos in an envelope on two family members that were deceased. The envelope was wet, and the contents partly damaged. The hotel did clean all the bags and dealt with it very professionally, even gave me a couple nights free as compensation. After speaking to a staff member, he says damp is a problem in the hotel due to some defects when it was built. It's such a shame, as it really is a good hotel and in a good location in Bangkok.