I was recently on a trip to Nepal. I was there about 15 years ago and things have changed. As I was traveling alone I wanted someone to handle my arrangements so I could just enjoy my trip. I I was recommended 8eyes Travel. They have an office in Thamel and I highly them. They are organized a cool trip to Pokhora and Base camp for me. Very good service from the friendly owner Nabin. They even booked my ticket back to Bangkok. They have lots of experience and know Nepal very well. Check them out when you are in KTM. Honest, friendly and reasonable prices.