It was exactly forty-two steps from the entrance of the office to the woman’s ‘cubicle’. This nestled like a house, at the end of a narrow alleyway between rows of cubicles on either side. Her place was at the farthest end of the office, signifying that she was one of those who had been with the firm for the longest. Lately, she had been feeling like she had reached her end, without anywhere further to go.
It is perfectly readable and understandable as you have written it. My suggested amendments are aimed at avoiding too many repetitions of the word "cubicle", as well as making minor corrections to tense and case.