No there is no point appealing your grade. At most universities (assuming you're a uni student) you can only appeal a grade on the basis of an administrative error. The problem sounds to be more about the quality of feedback you've received rather than the grade. Grades represent a holistic judgment of the quality of the essay, you wouldn't be 'marked down' for something like the formatting unless it was really crazy. But the feedback hasn't identified where you could meaningfully improve, that is the problem. A 'good well-written and interesting essay' could be said of a 60, a 70, a 75. You want to know in more detail how you could have made it better. It's important to remember that feedback comments (if done well) are calibrated to the student's level. A good interesting first year essay wouldn't necessarily be a good interesting masters essay, etc. The question for you is how you could make it more interesting and better. You should request a feedback meeting with the marker, but be clear in your own head and in your communications that it is about getting better feedback rather than challenging the mark. If the marker feels you're just trying to dispute the mark that may make them feel defensive and they probably won't be as forthcoming with the kind of helpful feedback that you want.