Is there any package deal for 3 nights stay in hotel?
I am sure there all kind of packages being offer the hotel. You may login to their website or thru Tripadvisor portal for the best offers.
I know that one can stay there fir 3 nights or more or less. Any package would be promotion and packaging
In that case you need to call your area travel agencies like
Here's the travel agencies name they are dealing with this hotel find out the contact information on website and book them
Get an answer from Hyatt Regency Delhi staff and past guests.