Highly recommend staying in this apartment - very close to U-/S-Bahn Herrmannstr. with easy access from the airport, to the city and plenty of things to do nearby.
The apartment itself is bigger than expected, with plenty of natural light and nice views, very well equipped kitchen (only minus: kitchen stairs are a bit wobbly), nice sofa and big table to work from in the living room and a very quiet bedroom with a comfortable bed. The balcony door was broken and couldn't be opened, but as I was staying there during a snowstorm that didn't matter much and Hannah had informed me of this ahead of time. Good Wifi, fast enough for video calls even though I had some problems connecting to it from my phone (which didn't bother me enough to try to fix it as I was mostly using my laptop where it worked well).
Hannah is a very responsive and friendly host, she made sure I had everything I needed and her friends who let me into the apartment were super nice as well, they even offered me some food for my late arrival. Easy check-out, just dropped the key in the mailbox. Would definitely stay here again next time.