Those cabins are part of Lake Rudolph Campground & RV Resort.
Here's an interesting bit of background from Dave, their marketing director:
Lake Rudolph’s main office was the original Koch family home. The main lobby was once the bedroom of Lake Rudolph's owner, Philip Koch. The marketing office is the old dining room. We have a call center in what used to be the girls' bedroom. And, the general manager’s office was once the master bedroom. Every time Mrs. Koch stops by, she cries, “What have you done to my house?” We’ve made so many changes to the house that it only vaguely resembles its former self, but the memories of Bill and Pat Koch and their five growing children are still very much alive.
Here's the home/office Dave just described:
Intrigued? Stop by this Saturday between noon and 2:00 pm CDT if you'd like to take a Resort tour. Their Open House will include a look around one of the new king-size rental RVs. Free hotdogs, too.
This rental RV thing is a great concept, as are the cabins.
Here are some numbers from Dave: Lake Rudolph Campground & RV Resort also features more than 200 full-hookup RV sites (water, electric, & sewer), 45 Deluxe RV sites with concrete pads and patios, 40 tent sites with water & electric, 141 family rental RVs…
…19 cabins, and amenities including: 2 swimming pools & kiddie pool, 2 basketball courts, playgrounds, 2 miniature golf courses, fishing lake with paddleboat and rowboat rentals, 72 rental golf cars, beach volleyball, game room, horseshoe pits, camp store, 4 modern air-conditioned bathhouses, 2 laundromats, outdoor pavilion, Free Holiday World shuttle, and more.
What, Dave? No partridge in a pear tree?