My girlfriend and I had a wonderful experience explore the Manaslu Circuit trail. With only 17 days to make the Manaslu trek, Naba made a modified itinerary for us and we had our own private tour with Rishi (guide). Rishi were very very friendly, knowledgable, and fun to be around. Naba explained everything before we departed, and even picked us up from the airport when we arrived to Kathmandu so there was no hassle. The hotel that he provided for the first two nights before the trek and the last night after returning was in a great location in Thamel and had excellent included breakfast and comfortable air conditioned rooms.
The trek itself was incredible- very little tourists compared to EBC or Annapurna. The Nepalese are very friendly and accommodating, and anytime we ordered food on the trail they never failed to offer us more and make sure we were well fueled for the day ahead. I confess that the 10 hour day going over Larke Pass was one of the hardest days of my life! Totally worth it though, don't get me wrong. Naba took us to dinner when we returned from the trek, and helped us with bartering for goods on our last day in Kathmandu. He was very receptive to any feedback or concerns we had, and is a very professional business man who treats his clients and employees like good friends.
I would definitely recommend using his company for any treks in Nepal!