Guesthouses are found in all the bigger camps, and generally accommodate 12-16 people, in various fashions! They are secluded but pricey! (Currently R4000 per night for the first minimum 4 people)
Monis Guest House, Skukuza:

Please check Needs Attention pre-booking: https://africawild-forum.com/viewtopic.php?f=322&t=596