The male dormitory retiring room at KYQ is good. Not hot water in morning.
Just besides the stairs leading to retiring area, there is small general stall, serving some 2-3 items like samosa, bakery items, tea-coffee, food packets, for 24 HOURS.
Trains into Guwahati are usually late. Keep this is mind. Your schedules may get disturbed. I was told by this by a local person. Later, My train 22511 LTT-KYQ was late by 4 hours.