It's pretty good (by Chinese supermarket standards i mean) and is comparable to Gubei Carrefour. You can get your basics anyway and some 'imported' stuff...But the bread section is pretty dismal unless you think 'Bread Talk' type rubbish is fit to be called bread. Stick to Gubei for delicious 'real' bread.
Its across the street from my place so it has become my new local supermarket. Crowded as heck on weekends as expected but tolerably so. But its in a good convenient location for sure.
Just in case somebody else is trying to rely on the information in this thread: It is (now) exit 2 if you take metro line 2. Exit 4 brings you quite far away from Cloud Nine Shopping Mall.