This is my personal favorite. I love Igatpuri as it is located on a hill and turns into this green garden during monsoons. Its got abundant waterfalls & spectacular views, just like I love it. This is around 130kms from Mumbai and is located in Nasik district. It is famous for its Vipassana academy. So for all you looking to cleanse your mind and enjoy a bit of non-connectivity with the world, head straight here. I have heard the Vipassana academy is one of a kind and offers a great experience. Igatpuri is also surrounded by the highest peaks of Sahyadris ,i.e the Western Ghats. It is just a drive away and is home to some amazing weekend villas & the famous Manas Resorts.