Abu is in Rajasthan. But you can say it’s on the border of rajasthan and gujarat. It’s very near from Ahmedabad. You can go by bus. It’s nice place to visit with family. Right now it’s over crowded by the people who come to there to Drink from gujarat. And the wendors over there are also not that good. If you want to enjoy nice holidays then go to Matheran. It’s clean and nice place to spend holidays.