This is a great place to stay. I came here in late February for 3 nights, mainly for bird photography, after spending 6 nights at the coast. It's a long but interesting journey by minibus (2) and boats(2) and we arrived on the Lady Hippo after dark to a warm welcome and some great Gambian cooking by Binta. We were lucky to arrive 2 weeks before Mark, the owner's, wedding, and , along with his Mum and other guests, we helped him celebrate in advance. The wine and beer never ran out and the drumming and dancing lit up one of the evenings.
We met some wonderful people, the tents beside the Gambia River were great, the composting toilets were pretty much odourless and the beds very comfortable. Apart from a few sandflies, the insects were almost non-existent too - the NE breeze and dry atmosphere no doubt keeping them away. The swimming pool, filled with river water, which we thought might be a bit 'iffy' was in fact very pleasant indeed and well used whilst we were there. My Dutch neighbours had a small shock when returning to their tent one evening, to find a rather large Monitor Lizard lounging outside - all part of the rich scenery here! We watched Hippos from the boat, found an Eagle Owl roosting near the Camp and spent two hours getting very close to over 100 pairs of Red Thoated Bee-eaters at Bansang Quarry - all feeding young. For keen birdwatchers, Wassu turned up a Light Bellied Bustard on our return trip - a bit of a rarity in Gambia; worth searching for instead of looking at the stone circles.
Hard to think how the camp could be improved - it is certainly a cut above Tendaba down the river which, although great for birds too, looks rather depressing when approached by boat! I hear it's not that bad, but first impressions can be important. It could do with a major refurbishment.
Mark runs a logistically difficult operation at Hidden Gambia, but it seems to work well. We did suffer from a 1 hour late pick up on returning to the airport which left everyone a bit breathless and one of the mini-buses we were provided with at the coast was a bit of a wreck (dodgy brakes, crunching gear box, dented side, bald tyres, no seat belts, completely ineffective headlights etc etc) but the standard of driving was pretty good and it didn't break down! A slightly more modern vehicle would certainly increase the confidence levels of European travellers.
Other than that - I have nothing but praise for Bird Safari Camp and Hidden Gambia. I expect to return quite soon!