There were recent evaluations in my company, and from what I got, the manager gave only 2 opinions of the workers in our department, which could be shortened to:
"I have no objections to his/her work" and "I am pleased with his/her work".
Judging by the following raises and benefits, it would amount first option to "performed exactly as expected" and second to "performed above expectations".
I am the most junior (both work-time and age) employee in my department, yet it seems I am the only one to receive the "above expectations" opinion. There wasn't a single issue brought up with my work, which I find hard to believe, given my inexperience both at the position and in general work-environment.
I asked the manager directly if there was REALLY nothing that could be improved about the way I'm working/the product I'm delivering, to which I got a basically "no" answer.
However, I still feel like there's bound to be something to improve on (again, I am nowhere near the senior colleagues, and I can clearly see the differences) and while I understand that there may be lesser expectations of me given my lack of experience, I still feel I should at least get pointers at to what I can improve to grow past "junior" position.
Should I keep asking for that kind of feedback after receiving a straight "no" answer or just let it be and assume there's really nothing wrong?
EDIT:
To clarify some things:
Those "reviews" are done monthly, and we see the results of them every 3 months (raises, benefits, etc.) My boss is also the most senior developer and reports his opinions about us to the main boss.
The questions I asked were "Can you see an area where I could improve? Can you think of a situation where I could performed better?" - those are the questions I received the "no" answer for.
When asked about his opinion (and what he passed to the the main boss, who seemed very happy) he said that I performed better than he was expecting. X was good, Y was strong etc.
That's where my slight disbelief comes from.