We stayed at Bateleur for two nights - and would have loved more. We were originally booked into the (cheaper) sister camp at Kichwa Tembo, but on arrival our guide was directed to the car park for Bateleur. Thinking there was some sort of mistake, we were a little worried and didn't really appreciate the initial welcome, but after being shown to our room and returning to the main area, there was no doubt that we were in the right place and made to feel very welcome.
The room (a luxury tent) was very comfortable and had wonderful views over the edge of the Mara - we saw plenty of game from the veranda. The lodge has resident monkeys, warthogs, mongooses and bushbuck as well.
The food was of high quality and good size portions. The service was personal and friendly throughout - everything we've come to expect from &Beyond.
I can't comment on the guides on the game drives as we had our own guide as part of a tour, but when talking to them at the lodge, they seemed very knowledgeable, and other guests seemed very happy with them.