hi there.. iam a new here and just want to apply for master degree.anyone had an ideas what the best topic for my research proposal related to hotel management

best course of action is todo a LOT of reading on this topic. Then you will discover what the gaps are in knowledge in your field and you can go from there.

I agree with Kolab.
Also, a fast way is to catch up on current material in a topic is to look through some dissertations/proposals which are already available online. Most of them have the open issues of a topic listed out, and some have very good literature reviews, both of which can point you to the right direction.
Needless to say, of course do not plagiarize.