From Mumbai CST : Take harbour line train from CST going towards Panvel. There are frequently trains to panvel.
From Mumbai Central : Take western line train going towards Dadar.get down at Dadar.switch to central line,from Dadar take train for Kurla,at Kurla from ha/rbor line you can easily get train for Kharghar.
From Panvel :
123,504 & 526 are the buses from kharghar railway station to Dhruvatan.
From kharghar railway station you can get sharing auto for Guest House.