Easy to understand and uncluttered.
1) Improve the head area in your code. ( DOCTYPE, metas, etc. )
2) I put in several cities which returned nothing. There was no message telling me there were no matches, or to refine my search terms, or anything else, so I`m not sure if nothing exists in those cities, or if I just need to type them in differently; if that was clearer, I`d know whether to keep looking or not.
3) Just to cover your back, and your users, I really don`t see anything about safety issues. Staying in a hotel is one thing; total strangers in someones` home is another.
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International Society of Curmudgeons