How good is Christ Institute of Law at Pune, that is managed by Christ University Bangalore?

The question is not as delicate as it seems to be, so need to highlight few more things i.e. would be answering the second part of your question first i.e. how is law in general, crowd, pressure etc.
But before answering your question,
a small suggestion that preference should be given to National Law Universities, when it comes to pursuing law in India but not in every case and that will be discussed subsequently that when should you choose private law colleges like Christ and Symbiosis over National Law Universities.
So, why National Law Universities? Because one thing is for sure that among other things these universities will surely, provide you quality education, and will focus only on law with a handful of students (between 500 to 600), the student quality would be better i.e. the crowd than these private law colleges.
The biggest trend that is being followed today before choosing a law college is placements and later rest of the things come like the faculty, the infrastructure, location, student teacher ratio etc.
Talking about law, Law is not tough and is all about logic but you have to read a lot, you need to be a voracious reader if you are choosing this field. A lot of pressure is their in these 5 year law courses because of the structure of academics which is divided into parts i.e. internal and external where, for internal you have to prepare a project for almost every subject ( in few cases it might differ like role play, group discussions, moot etc.), viva voice is also conducted for the project making and hence, completing projects, studying for mid sems, etc. in a very limited time period exerts pressure on you, moreover for overall development you will need to participate in moot courts, seminars, debates and that also adds up to the pressure part and makes your schedule pretty hectic.
The crowd in general is nice, most of the students come from high societies and in few cases only you would notice a student from a middle or a lower middle class, this is because of the typical Indian mindset where, people regard that Science and Maths are the only things in this universe which have the capability to not only increase the intelligence of the student but also these are the only fields which entails in itself vast opportunities which no other field carries, the exorbitant fee structure of NLUs and private law colleges also contributes to this typical mindset.
Now, coming to the most important part, Christ University is a very disciplined institute, where you are only allowed to wear formals inside the campus (that being the typical dress code), classes run from 7 in the morning. Overall Christ University is a decent place to be, the students of the University excel in moots and debates and the university has made a name for itslef, the university is located in Bangalore, a city which will provide you a lot of exposure and is also rich in facilities.