Josh's place is tucked away in a beautiful, safe, quiet residential street away from the tourist madness of Ali'i Drive. Parking is easy, and check-in/out is even easier. It's about 15 minutes to all the stuff you need--grocery store, restaurants, etc. Two hours from Volcano National Park, 40 minutes from snorkeling at Two Step. You can walk to the shoreline to see the waves crash in. Basically the place is a great jumping-off point for everything on the Big Island.
The studio is the perfect size for two people. I agree with other guests who say it could be cleaner. Small warning: the bathroom wall doesn't quite reach to the top of the tall ceilings. So while you can't see anything, you can definitely hear. The bathroom doesn't have a ton of privacy in that respect. (This detail might bother non-couples.) Also the place is quite loud. You can hear neighbors walk around, listen to music, drop things, etc. The walls/ceilings are pretty thin. The noise can be pretty distracting.
Josh is a great host, flexible with lightning fast communication. The location of the studio is perfect for those who don't want to be in a crowded, touristy area and be away from resorts and condos.