I'll be honest, I've driven by this place, but never entered. I've heard from others that the service is good, so I'll give that a 5.
What I can say, from firsthand experience, is that the food is delicious. In fact, the chicken burger is "the" best chicken burger I've ever had.
The meat is a tender cut, the vegetables are fresh and crunchy, they use melted cheese with sliced jalapeños, and the buns are good too.
The burger is big, and the price is jaw dropping. 25rmb for this amazing burger.
I've tried their beef burger, and it's good, but the chicken burger is amazing. I order from them (Wai Mai, take out on e le Ma) two or three times a day. I just can't get tired of the taste.
Jimmy's Burger is something any burger lover should give a shot to, it's just so darn good.