The reader can easily follow what's being said, but the overall organization may be ineffective or too obvious. The writer seems sincere, but not fully involved in the topic. The result is pleasant and acceptable, but not compelling. The language is quite ordinary, but it does convey the message. It's functional, even if it lacks punch.
Sentences tend to be mechanical, rather than fluid.
The text hums along efficiently, but it lacks rhythm or grace. It is pleasant rather than musical. Awkward constructions force the reader to slow down or reread. Errors in writing conventions begin to impair readability. While these mistakes do not block meaning, they tend to be distracting.