i am planning a visit to both these places, but can't decide which out of the two is better to spend the night in..which of the two has better rooms??

The two properties can not be compared. The reason is Neemrana is an ancient fort of the Chowhan kings. It is a heritage property with wonderful rooms, some better than others. The service & meals are good.
On the other hand, Chokhi Dhani is a 5*resort 25km from Jaipur. The setup is a mock village fair, lots of song & dance. Good rooms, like the way you have in a village, but with all modern facilities. If you want to be a part of the festivities, Chokhi dhani is your choice but if you fancy a quiet heritage hotel, let it be Neemrana.

Agree with Mr Singh, depends what you're looking for.
I have been to both and vote for Neemrana. Chokhi Dhani has a very theme-park like feel to it.. Disney land, Indian style.

Hi, Just so you know, the food at choki dhani was quite heavy/non-appetizing. We both felt sick afterwards since there was such an abundance of ghee (clarified butter). I would be careful of how much you eat there. The 'mock' village will take you 2 - 3 hours to see everything, and after that, there is nothing to do.