We went as part of a group and had a very good experience at Hippo Hollow.
Our room was nice, with a huge shower, a safe, lots of space, a little patio that was not far from the small swimming pool. The bed was comfortable, everything worked, and the whole complex was very well cared for.
The lobby area was open, and that's where you could access wifi; it's available in the restaurant/bar area too.
All of the food were had at the restaurant was buffet style and there was good variety and it was pretty high quality. One night we had braai and it was excellent. The bar was small but pretty well stocked and there were barstools for that good ol' experience. Breakfasts were good, with hot and cold items available
The only animals we saw on there property were giant yellow and black caterpillars (and I do mean GIANT), a peahen, and elephants in the distance - oh, and birds.
One night while there, we paid extra to see a dance show where the dancers dressed like warriors stomped to drums. It was a very energetic and athletic show. They picked a couple of audience members to join them and dance; that was entertaining.
The main pool was really nice and pretty big. The smaller pool was not cleaned nearly as often but was still pretty nice.
I liked Hippo Hollow and would recommend it.