We recently spent 3 nights at Lemala Ndutu Camp and enjoyed it very much. This is a moveable camp that follows the great migration. The tents are huge and have a separate area with bathroom and bush shower. I particularly liked that there was plenty of water available for drinking, as well as laundry powder, shampoo, and soap.
The staff are wonderful! Each morning, you are brought coffee, tea, or hot chocolate at the time you specify. Luxury! Each evening, you can sit around the campfire and have sundowners and eat at a communal table. Food is very good. It's amazing what the chef can do with so little equipment.
We slept very well at this camp and woke to hear lions roaring but always felt safe knowing that there were Masai patrolling the camp at night. Location is excellent.