Slice of Heaven's pizza came highly recommended, so we went significantly out of our way to find it. The food itself was pretty good (not the best I've had in China, but certainly not the worst), but the attitude of the proprietress was gruff and, at times, openly disdainful. She huffed audibly when we didn't want to order liquor (as anyone who's worked in restaurants knows, liquor is the money maker; but that doesn't mean I have to start drinking it in order to eat at your restaurant). The food took about 45 minutes to arrive (an indication of either poor management of resources or improper staff training, in my experience; Mike's Pizza in Chengdu, for example, is much busier but is managed well, so you get your pizza quickly), but we were happy enough to eat it and made no complaints. We were pleasantly surprised when paying the bill to find out that the restaurant was running a special that gave us a great discount—but later, the owner had the audacity to complain that we didn't spend enough money in her establishment. She thus guaranteed that I will never spend money there again.

If you don't mind a condescending, bad attitude and incredibly slow service, do it up.