This is not really a hotel per se. 30 day minimum for a stay is requred. Its on par with the rest of the Taj properties in India. Definitely upscale and definitely costly. Most folks are living here for work and their companies are footing the bill.
The place is lovely however, so if you need to relocate or be here for an extended period, this is a good jumping off point.
Lovely spa, great pool area, large for Mumbai, fun downtown location, within walking distance to the sights,etc. Service is very good and what one would expect with a Taj property.