I really enjoyed City of Secrets, my first Emily Short game, and spent several hours on it over a two week period.
It is very easy-going in the puzzles: this is more a game of conversation and exploration.
The world-building is impressive. I never felt like I was reading a wall of text, but I understand the world I was in and was not confused. The world she created here is rich and deep, and at times, written with sparse, minimalist prose. I mean to say that Short doesn't waste our time with over-wrought descriptions and backstory. Important information is communicated simply but eloquently.
I enjoyed this and would recommend it to anyone who is new to IF. You won't die at random, and it seems nearly impossible to get stuck. The writing and pacing are a treat.
I had some "guess the verb/guess the action moments" at the very end, but it wasn't hard to figure out what I was supposed to do--re-reading the text and thinking carefully, I saw that the appropriate verbs were at least hinted at. I wouldn't ascribe any of my late game confusion to the author or the piece.
If you are seeking something fiendishly difficult, I'd recommend moving on, but keep this in your queue: when you need a break from mind-benders, you can enjoy the writing and atmosphere of this game.