Android Studio: Project Location

As of Android Studio 1.0.1

Path: .AndroidStudio\config\options\ide.general.xml
Name: lastProjectLocation

Path: .AndroidStudio\config\options\other.xml
Name: recentPaths

If you want to rename your project, you should update the following files within your project:

.idea\.name
.idea\modules.xml
.idea\workspace.xml
<project_name>.iml