Where to stay and how to travel from Mumbai/Thane/Dombivli/Kalyan

have received joining for Accenture Pune - they have said to report PDC3B phase 1 blue ridge town Hinjewadi be coming from Mumbai, know nothing of Pune, this is the first time ever away from home. Where should I begin with? any suggestions for affordable accommodation with safety, gated community,. good water & electricity & wifi/mobile network, lively places to go nearby, availability of basic stuff Nearby less than or Within 15K rent or a little more -ideal budget)Walkable distance from ofc