Finally again come at Lonavala station with buying Lonavala famous chikki...
in Lonavala and Pune both railway station have 24 hours clock room facility and waiting rooms,
In Khandala railway station in ticket window have 24 hours clock room facility.
Finally i would like to summary to main points-
In Mahabaleshwar- best points are - arther seat point , lingmala water fall, Lodwik point, and if want to see 100% dense forest then dhobi waterfall and Connaught peak point.
In Lonavala- bhushi dam is best,
In Khandala- raj machi point or sunset point (both are walkable area).