I have been using this software since it first came out about 5 years ago; it has grown with me over those five plus year! It was easy to use when we had only one store and I could do everything from that computer (even if my laptop crashed).
Now days you need more computers so things are harder but still possible as long as your network can handle all three locations at once!! There really isn't anything too bad except sometimes there will be some weird bug where they don't update their app immediately after an upgrade which causes issues because then nothing works properly until fixed later.