I love the fact they are open 24 hours and I can get a pretty good sandwich when I work late. The coffee drinks are weird, but I'm not really into Vietnamese coffee drinks. But that's not their fault.
I took off a star because they took away their frequent buyer's stamp cards, and said oh, it's an app now. And gave me no further instructions or a QR code as to where to get the app. While I was waiting for my food, there wasn't any app on their website. I f I have to look that hard, it's not worth it, and they clearly don't care about their frequent guests as much.