You can get 174 from here. crowded place
174 Kottawa Borella
(Via Kottawa - Pannipitiya - Polwatta - Thalawathugoda - Wickramasinghepura Junction - Pelawatta Junction - Battaramulla - Welikada ( Rajagiriya ) - Cotta Road - Ayurveda Junction - Borella)
Yes buses stop here.. But no shelter.