The “Microsoft User Data” Folder will put in your documents folder when you install Microsoft Office 2011 for Mac
It will always be there no matter how many times you try and delete it. It will be automatically recreated every time you open Microsoft Word or Excel.
This is how and where to relocate it.

Simply move “Microsoft User Data” folder from “Documents” to Users/ (YOUR USER NAME)/Library/Preferences/Microsoft/Office 2011/

If your library folder is not visible take a look at Show User Library Folder in OS X Lion & Mountain Lion