It is appreciated that you are a novice, but I'm surprised that you had a mixture of answers.
Assuming that you want to do it properly, even for such a small area, and that you want it to last - break up the concrete.
If you don't want to do that then why not pave it, if the concrete is too rough to leave exposed.
If you just lay the turf on top you are probably going to have to replace it annually for with no decent drainage it will be waterlogged in the winter and conversely in the summer it will be crying out for water!!!!