Hippo Hollow is a nice place. It's well located with easy access to the Kruger Park and north to the Panorama Route. It's located on the banks of the Sabie River and set on well tended grounds. It's very clean, very well put together.
We stayed at two cabins (large family). Each cabin had a small kitchenette, two double beds (that could be put together as a king), and an extra bed on the loft. They also had a very nice balcony overlooking the river and the adjacent elephant sanctuary.
Everything at Hippo Hollow was just fine without being excellent. The food in the dining hall was good, but not extraordinary. The staff always took too long to replenish the dishes and if we didn't time our arrival just right we would be eating what looked like reheated left overs.
That said, they were very helpful, with useful local knowledge and polite to a fault.
Keep in mind that using the Hippo Hollow as a base to the Kruger Park puts you outside the park itself. That means that you must allow a lot more time in the morning to get into the park (standing in line for permits and other documents you must sign) and actually driving into the park to start looking for animals. Not a deal killer, but something you should keep in mind.More