Use the coordinates in Google Earth (or just maps.google.com) and you'll see where it is (gotta zoom out with Google Maps). Actually promoted as a touristy place. Beaches, temples, waterfalls -- not sure about the safety of the sociopolitical environment, though, and the geology, well...
East Java tourist map (#28)
There's a Mt. Merapi nearby, but this is not the bad Mount Merapi in central Java.
Dangerous work.