So far it is the biggest mall in Yogyakarta. A bit far from city centre but it offers different atmosphere from other malls in the city. I love it for housing The Coffee Bean and Tea Leaf.
Wide range and selection of culinary treats are available here, from high-end restaurants to cheap & affordablefood stalls. JCM also has the most comfortable 'mushalla' among the malls in Yogyakarta.
The parking lot for motorcycle is a bit tricky and always full. Go for the basement (I think? It is go down one floor from the parking entrance gate) to get a more spacy parking lot.
building style is hideous, tacky and has no soul whatsoever, vendors that part of the premises just like any other establishments, cheap style, warehouse like shop. Difference building same rubbish