Shivalaya Gokyo Trek
I booked the Gokyo Lake Trek Guide and the transport (Bus to Shivalaya and flight from Lukla). The trekking agency Global Adventure Trekking in Kathmandu Nepal was very professional and helpful. They really looked after my wishes. I would absolutely recommend this Trekking agency for any kind of Trek.
I did Gokyo lake trekking for 3 weeks and I was very satisfied.