We spent 6 nights at Nkambeni, it's good place to stay if wanting to explore the Kruger on a budget. The tent lodge is good size and comfortable with air con. If you are a light sleeper make sure you have ear plugs and you won't be bothered by noises,(there is a railway line nearby, sometimes a train goes by in the early hours of the morning).
The dinning room over looks the Kruger,nice to watch sun rise/set also a hippo pool on other side of fence where you can view hippos and an other animal that comes near the water hole.
Pretoriuskop camp(inside kruger) is the nearest petrol station for those who are doing self-drive. We did do one game drive, the sundowner, we stopped half way into the drive for drink and snacks to watch sunset. The driver was knowledgeable and friendly which made the experience more enjoyable.