It is Subway - chain fast food (although they don't call it that). While most of the subs are healthy, it is the stuff you start putting on them (extra mayo, cheese sauce, etc) that makes them bad for you.
This particular Subway, and the rating - its the people, they just need to pay better attention. If you are the ONLY customer in the restaurant... then you are OK. Come in during a lunch or dinner rush... and you can only hope. Manager needs to do some good group and team training - if they would all just work together.