There are several places to stay along the route. In Sandakphu, I stayed in Sherpa Chalet because of its rooms with great views of the peaks. There is no electricity at these places and the lodges use solar lights for some hours at night. So do not expect luxury amenities like TV etc. However cell phones do work for most part of the route. Room rate is 1200 in ground floor and 1600 in 1st floor.