We went to Nyungwe to do a chimp-tracking and the waterfall-tracking. We stayed in the ORTPN-guesthouse Gisura. Very nice place with good food.
We came by public transport (Sotra and Impala), they can drop you off at the guesthouse (and also pick you up). Notice that for the chimp tracking to Cyamudongo you need your own transport 4×4. To go to the chimps at Uwinka you can hire a motor (30 USD) or car (100 USD). The transport has to come from Cyangugu.
Joost & Arina