We use Homestead as a Server for all our projects even for WordPress projects. PHPStorm has a really nice Database connection feature. But to set it up with Homestead it took me a while so I want to share the trick.
Just open the Database tab on the right side.
Add with the plus sign Data Source -> MySql
For the Settings I had to take the ip instead of localhost and use the forwarded Port (can be different on your system if you changed the default settings)
Enjoy the nice Database support!