I spent the night in the home of devotees. I rose at 3:45 took bath and chanted 17 rounds straight through without interruption. This is my preferred way of chanting, there is better concentration that way. But at the same time it is only about the mechanical arrangements of the favorable time and place. One can chant at any time, in any place. Chanting is about being a servant of Krsna, then it is not difficult.