OK, Now u see my real name, and a pic of me relaxing near the Khadakwasla dam in Pune district which is a 3 hours drive from mumbai.

One tip i can give you from your reply about the nature of your work and wat u plan to do in mumbai is that please avaoid the western suburbs of mumbai at any cost.
Anywhere but the western suburbs would be fine, and ppl will vouch for that. That is one crowded area which even an hardcore mumbaikar like me would like to avoid, but cant as i work there, in Andheri.

So u know which palce to avoid when u r in mumbai, u dont want to be caught in the worst traffic snarls of the city, also nothing much there, except for the Powai lake and the Sanjay Gandhi national park.

Hope this helps, Take care!!!