On the plus side: modern, clean, safe (inside the apartment and in the neighborhood), super comfy bed, easy to get to the trains, shops are nearby, and some phenomenal restaurants are within walking distance. ***MUST go to Soleluna; an Italian place nearby. It's AMAZING!
On the negative side: 1)The owner didn't respond to a single text from me - Not when I couldn't get into the building (had to buzz other tenants. Luckily the apartment inside the building was unlocked!), not when the shower didn't work (had to take a bath the whole time I was there), not when I asked him to turn up the heat or provide extra blankets, etc. - 2) it's MUCH darker than it appears in photos, 3) Didn't have basic accessories like a bath mat, face cloths, lamps (overhead lighting was retina burning), or extra blankets (I got cold and there's no way to turn up the heat), etc. 4) It's about 40 minutes by train to get to the best parts of the city. And the train system (of course, not the responsibility of the owner) is VERY complicated (but, cheap). So, most people will have to Uber everywhere, which can get VERY expensive.
The main frustration was the lockbox was broken. So, as a woman traveling alone, locked outside in the dark for an hour, in an unknown neighborhood, I was a little scared. I had to buzz several other tenants before one came out and let me in.

***Pro tip... take photos of the location, check-in instructions, and wifi information (before you leave your country of origin) if you're traveling to the US from another country. Your SIM card won't work, so you can't access data on your phone unless you're connected to public wifi - which is NOT recommended. There is private wifi once you get into the apartment, but in order to connect, you'll need the instructions - which are not provided in the apartment - so the photos are crucial for navigating everything once you land.