Please note that this is part of the backpacking trip. The travel is mostly shared cabs and bus. Hotels are aplenty and can be checked on the go.
Guwahati to Shillong - Visit Umiam Lake on the way.
Reach Guwahati and start the journey to Shillong. There is a bus from ISBT (easily reachable from Airport via City Bus).
Get down at Umiam Lake. If you are from Mumbai, it is comparable to a better Powai Lake. Halt the next bus and move to Shillong.
Have a chillax day in Shillong as there are some treks in store in the coming days.
Do try Dylan's Cafe.