This is a great location! Neukölln is full of great restaurants and bars, and it’s a short ride on the underground to Kreuzberg. These were the areas I was most interested in exploring in Berlin, so it was perfectly central! The transit system is incredibly easy to use, so the location is ideal because it’s next to a station.
The apartment itself is very cozy! Two big windows that open over a terrace, and there are two beds. The downstairs is a sofa/folding bed. The bed in the loft is accessed via a ladder, so make sure you’re comfortable with climbing that if you choose this spot! There is also a very low ceiling for whoever chooses the loft bed. No problem, just something to be aware of for accessibility purposes.
Would definitely stay here again! But beware: there’s a bakery downstairs so you can smell the scent of fresh bread all evening and morning... :)