We spent 3 days at the Serian main camp, and thoroughly enjoyed ourselves. We had Tent 2, which had a beautiful view across the river from a verandah. The bathroom was down a 5m path, and although there was only a curtain to pull cross the entrance if you were using the toilet, given no-one could see you, it wasn't really a problem. Likewise the outdoors shower, which we accepted with great enthusiasm since hot and cold running water at all times of the day is a luxury.
The food was simple and tasty, served at communal table, though I would have preferred less salads at lunchtime since I was trying hard to avoid traveller's tummy (though we didn't suffer at all) and although it was expensive local beers and house wine were included, as well as all food and the game drives. We had a number of different guides and they were all good.
Overall, we would recommend this camp if you want a peaceful location outside of the main game park (which therefore allows sundowner drives) with excellent guides and you don't mind the sound of hippos snorting at night.More