I've only been to Tea Light Cafe once, and I probably won't go back. I just didn't think it was very good. I had some kind of bland noodle-y soup that just didn't do it for me and a strawberry tea. The tea itself was good, but the gummy-like balls that I sucked up in my straw kind of gave me the heebie jeebies.
BUT, if you really like Vietnamese food, I bet you'd love this place. Maybe I just don't like it because I'm not too familiar with the food. My friend loves this place and swears by it, but I just didn't see it when I was there and found it a little too pricey for what you get.