Area behind hotel, regularly in this state (5)
I believe the answer is:
haiti
'state' is the definition.
(Haiti is an example)
'area behind hotel regularly in this' is the wordplay.
'area' becomes 'a' (maths abbreviation).
'behind' says to put letters next to each other.
'hotel' becomes 'h' (phonetic alphabet: alpha, bravo, charlie etc.).
'regularly' indicates alternate letters (regularly take one letter, leave next etc.).
'in'+'this'='inthis'
The alternate letters of 'inthis' are 'iti'.
'a' put after 'h' is 'ha'.
'ha'+'iti'='HAITI'
(Other definitions for haiti that I've seen before include "West Indian country, capital Port-au-Prince" , "West part of Hispaniola" , "earthquake-hit area" , "West Indies republic" , "Island of West Indies" .)