Great place. Better option than Novotel (no air con) is the Botanica. Speak to Ludo. Very small so you need to be lucky to get a room there. Learn to play liar/Belgian dice. There was a get together of aficionados at the Botanica every Wednesday night. Try the deep fried frog legs at the Dong Fang across from the Novotel. Taste like prawns but the bones are the giveaway.
Lots of runway and the wind blows straight up the lake from around 10am every day, pretty much on the nose for take off. No obstacles unless you're really low and bounce off the odd croc or hippo. The Cercle Nautique serves a good lunch and their iced tea is excellent. Try the ndagala with peri-peri and mayo as a bar snack. Supposed to grow the best coffee in Africa in Burundi.