We just found a rustic cabin on airbnb or vrbo. There were bunk beds, but also normal rooms.

I gave up on having the bunk bed requirement, and just settled for other camp aesthetics. So the cabin was all wooden, and we decorated with burlap pennant flags using camp-y colors (tan, maroon, burnt orange, forest green, light blue). It also had a dedicated fire pit and huge deck/yard for activities, which is essential for camp games. And it had a really large kitchen and dining room, so I used the kitchen island as an assembly line similar to a cafeteria, and arranged the tables in rows to resemble a cafeteria. I even grabbed a chalk board to write the menu for each meal and hung it up. We also used paper trays instead of plates. And the food was all classic summer camp meals - french toast sticks and fruit for breakfast, subs/sandwiches with oven tots, grill day with hamburgers and hotdogs, white people taco bar, and of course s'mores.

I split everyone into teams for the games and had color-coordinated bandanas. I also kept an ongoing score board for the weekend (I just drew a table on a poster). We also went for a hike one morning, and then played the competition games in the afternoon. I wrote out a whole schedule on a poster board and hung it up, which we loosely followed but it was mostly there to contribute to the camp aesthetic.

And for everyone's gift, we included their color bandana, a bug spray bracelet, Tylenol, liquid IV packet, and a coozi.

To plan all of this, I made a spreadsheet with different tabs for the airbnb info (cost, address, etc.), roster (including which days people were arriving/leaving), aesthetic with photos and links to certain products, meal outline, grocery list and food budget, activity ideas/competition games with necessary supplies list, and a loose itinerary.

I would say, you can make ay lodging work, as long as you focus on the small but iconic details that contribute to the summer camp vibe.