Any one or Anyone?
Your choice!
Any one
Exemple : ‘’I would recommend any one of those restaurants.’’
"Any one" and ‘"anyone" can be easily confused though they have different meanings. "Any one" is used to signify a single person or thing within a group.
Anyone
Exemple : ‘’Does anyone want to see that film?’’
"Anyone" is a pronoun and is used to mean any person and is always written as one word. It has the same use as the word "anybody" and therefore these two words can be used interchangeably.