With a caveat that the hosts did not agree with our issue: We found the apartment to have a strong musty and almost moldy odor. It is possible that this bothered us because we are from a dryer climate, however in my experience there is a cause for this type of odor in beach climates whether it be older carpets, or some other material in the unit that needs deep cleaning or replacement. We have been in other beachside units both here and other places and not had this issue. The other issue was some type of fly, possibly a fruit fly, circling in several rooms. Since they didn't land, it was not possible to get them with a fly swatter.