Across Lake Naivasha from where we stayed was this incredible house. Our host told us that it is a guest house - and people pay over a thousand dollars a night to stay there! He said one weekend, a couple flew there in separate helicopters!
We didn't see a swimming pool, but then before we could explore the grounds, a guard came out and politely told us to leave. (We were playing Frisbee along the lakeshore near the house.)