It is better to hire car from pune city. Travel by train or airport upto pune and than hire car. There is not such good accommodation facilities are nearby Bhimashnakar and temple dharamsala still under construction. We directly drove from pune to bhimashankar and than went to Shirdi and than stayed over night there. You can stayed in pune and visit the place and come back to pune.
On the road trip from pune to Bhimashankar not such good facilities of water and foods are available. So it is advisable to take your food and water supply. At bhimashankar there are local shops from where you get snacks or local foods.