I always stay at JC Chalet on my Bombay trips. It is by the beach, quiet and rooms although a little on the smaller side are very clean crisp and well appointed with toiletries, free WiFi, breakfast, airport transfer all included. It is close to a Starbucks, the JW Marriott and Linking Road and my office in Bandra Kurla Complex was just a 15 minute drive at 8am.
Nice people, great value in a very expensive city. CHeersMore