There are few errors. The writing has minor flaws, but is effective. It is acceptable, adequate, generally correct and errors do not interfere with meaning significantly. The writing has serious flaws that interfere with meaning. It is awkward, artificial, limited.
Errors interfere with meaning, some sense of conventions but simplistic.
It is poor, lacking in parts, insufficient, inappropriate, repetitive, and simplistic. It has many errors that interfere with meaning and little sense of conventions. The Byzantium people did however carefully preserve many Greek masterpieces of pre-Christian times. All versions up to 1488 were handwritten bound manuscript books written on vellum or paper. Text was regarded as authentic, the exact words of Homer.