This was a great stay, and I would highly recommend it to anyone looking for a convenient, clean, and safe place to stay while in Zurich.
Check-in was wonderful. Michael's mother was waiting for me at our scheduled time and was extremely kind, making sure to show me around the place. Michael promptly replied to all of my messages and was always helpful.
It was very convenient to get around the city, and I never felt like I had to walk too far for a bus or train, even by Zurich's high standards. I did not realize how close it was to a bus stop (3min walk) and S-bahn stop (6min walk), so that was a pleasant surprise. The neighborhood felt very quiet and calm, despite being conveniently located to reach the city center and other parts of Zurich using public transit.
The apartment was clean and had a more modern feel than I expected. The bedroom allocated to me was spotless, with sheets and towels provided. Each bedroom has a secure deadbolt lock with key provided during check-in, and the doors feel very secure. The main apartment entrance did not have a functional lock, which I found a little strange, but the building requires a key fob to enter so I didn't feel unsafe.
The room had a mini-fridge, which I didn't expect, along with some chairs, a desk, and a TV. While the quality of the TV signal wasn't great, I didn't need it anyway so I didn't mind. A thoughtful touch included espresso capsules that were provided (one per night of stay) along with a mug and corresponding machine available for use in the kitchen.
The kitchen equipment seemed full-featured, with a microwave/oven combination, stove, and full-size fridge. Nearly everything felt clean, though it may be wise to quickly wash dishes before use in a shared apartment.
The bathroom was generally very well-maintained as well, outfitted with modern tile, a shower stall, and a clean toilet and sink. There was also a clothes washer and dryer in the bathroom. The noise of the washer/dryer was noticeable, but the bedroom doors felt heavy and blocked the sound well when closed.
Another point of consideration is the random encounters with other guests in the home. The host does not stay in the apartment, so guests are not aware of the check-in and check-out schedules of other guests. At times, one may find someone in the apartment and not be sure if they are another guest or (as the apartment door is unlocked) if they just wandered in.
All of the considerations I mentioned are implied based on the type of listing, so I could not reasonably criticize the host for them. None of them really bothered me, and I would gladly stay here again if I needed a place to stay in Zurich due to the cleanliness and functionality of the apartment, convenience for public transit, and reliable communication with the host.