Yes, some government law colleges aree very good. Some good government law colleges are-

1. National Law School of India University, Bangalore

2. National Law University, New Delhi

3. NALSAR university of Law, Hyderabad

4. Rajiv Gandhi School of Intellectual Property Law, IIT Kharagpur

5. National Law University, Jodhpur. 

For more colleges and details to these colleges, you can refer to this-

https://law.careers360.com/colleges/ranking/top-government-law-colleges-in-India