[MRM]

The Oberoi at Nariman Point, +91 22 6632 5757 is the choice of many ex-pats and employees of multinationals who stay in Mumbai. The Oberoi Trident is a slightly nicer hotel, but is considered more of a security risk because it was attacked in the 2008 Mumbai attacks. The Raj is in the same category, very nice but was one of the hotels that was attacked. They're all probably safe now, but those who supposedly are in the know prefer the ones that were not attacked.

Nariman Point is very safe and the food is OK too. If you stay with hot hotel food and boiled water you should be OK. Bring a lot of Cliff bars and don't eat or drink anything that isn't cooked and still hot to the touch. The hotel may fix boxed sandwich lunches for you to take during the day. Out of an abundance of caution, I'd suggest skipping the boxed lunch and eating Cliff bars. Do not trust food anywhere other than the hotel and restaurants the locals vouch for, and even then only eat piping hot dishes. Do not eat anywhere else, even in the airport clubs. If you follow this approach you won't have much fun eating while you're in India but you won't get sick. You can't take chances while you're working. If you were just on vacation you could maybe adventure a bit.