Max .... if you plan on making a trip to Green River Lake, Holmes Bend Marina is worth a look. There's also a campground just up the road from there, but it's run by a different bunch. The COE runs the ramp & picnic pavilion & charges to launch ($5) or rent the pavilion ($50/1day) ... but the cabins are rented by the Marina folks. There's also a swimming beach at Homes Bend (& a few other marinas & campsites).

On the other end of the lake there's "floating cabins" at the state dock (by the dam) and there's a state park camping area on the Northern end of the lake.

Cave Run has mostly camping areas, but I do believe there are motel rooms to rent ... but, they're not "on the water".

A little on-line research will give you the prices & availability info on either of these lakes, and you can always post on the KY Forum for the latest reports & accommodations info.