Had a 9 days trip from lukla to EBC and back during the december period. As it was a short trip our group didnt had a chance to properly acclimatize to the altitude. Mani was attentive and cared for our health during the whole trip. He is also detailed in his planning and would accomodate the trip schedule to our needs on the spot. A great guide to go with and had a good english proficiency. He is also well versed in all the mountains around Mt.Everest and able to answer all the questions we were asking. Would definitely recommend him to everybody i know that wants to have a great trekking experience to EBC.