Final answer:
Marilla's housekeeping skills are described as excellent, as evidenced by her immaculately kept home and thorough cleaning technique that leaves no trace of dust or mess.
Step-by-step explanation:
To describe Marilla's housekeeping skills based on the provided information, one would say that Marilla is an excellent housekeeper. The texts portray her space as immaculately kept, with a remarkable attention to even minuscule details, reflecting a high level of proficiency and dedication to cleanliness and order.
Her efficiency and care in housekeeping suggest she operates with a level of precision and skill that far exceeds average abilities. For instance, Sarah Penn's ability to clean without leaving traces of dust or flour in her home articulates a mastery akin to an 'artist so perfect that he has apparently no art,' which equates to excellent housekeeping skills.