Choose your answer: is the following review positive or negative?

I called Mark at Mr. Brake after reading so many nice reviews here on Yelp. He was extrememly nice and pleasant on the phone and made an appointment for me to come in even when he was already booked in the time slot because he understood my problem needed attention. I was having trouble with a "hard brake pedal" and I needed a good diagnosis. I met Mark at my appointment time and he was incredibly nice and friendly. He had his mechanics check over my car thoroughly and he also did so himself! In all, they took it on 3 check rides because my problem was an intermitten one. The diagnosis was completely free of charge and Mark went over all possible options and was willing to work with me. MARK WENT THE EXTRA MILE! I really felt he cared about me as a person and as a customer and wanted to do everything in his power to help me. The price he quoted for replacing my "brake booster" was extremely reasonable and fair. But because my problem was deemed not to be overly serious at the moment, we decided to wait a while and possibly have the work done at a later date. This is important because Mark did not pressure me into anything! He patiently listened to me and did what was best for me at that moment. I was so appreciative of that! When I drove off my mind was at ease! The bottom line is that I will definitely go back and have him replace my front brake pads when needed and will also have the brake booster replaced as necessary. Thank you Mark for being a true professional and putting your customers first! HIGHLY RECOMMENED!!!!

Choices:
(I) negative;
(II) positive;
(II)