I booked the cheapest place I could find that was close to the city center so I wasn't expecting too much, but I was pleasantly surprised at the brightness and cleanliness of the place! Michael messaged me clear instructions beforehand and I had no trouble getting in. I stayed in room B, which had 2 narrow single beds and a private shower. I debated staying at a hostel, but I have to say that having a private room & shower was a blessing and made my stay so much more comfortable. The sun shines in through the window in the morning, which was lovely to wake up to, and everything was very tidy and clean. Next to the shower was a small sink with a giant mirror-- perfect for applying makeup and checking outfits. A hairdryer was under the sink as well. I get cold very easily but the room was well heated to the point that I started sweating under the covers and had to take off my hoodie, so no worries there. The beds were firm and comfortable, which I also appreciated since I have lower back pain. There are 2 toilets which are both in a public common room, but honestly I only bumped into someone once during my 5 day stay so you should be able to do your business in peace. The common room is also fully equipped with fridge, microwave, dishes, coffee pot & instant coffee. There was supposedly also a washing machine somewhere. I didn't use any of them but it made me feel more at ease knowing they were there.
The flat is right next to the Naschmarkt, so the location is perfect for going out on a Saturday morning stroll through the market. The city center is about a 10-15 minute walk, so I rarely took transportation since most attractions were fairly walkable from here.
Tip: make sure your shower curtain is properly closed/make sure your clothes are not on the floor... one day the water leaked out and soaked all my clothes that I had left on the floor :( Also if you need to leave your luggage after you checkout you probably can. Unfortunately I couldn't get in touch with Michael to confirm so I ended up dragging my stuff around town on the last day, but most likely he will let you leave it in the common room and and you can just pick it up before you go to the airport.
Overall this place was a great deal for it's value! Perfect if you just need a place to leave your bags, shower, and sleep, but you also want more privacy than a hostel.