Arik's place was exactly as advertised. We stayed for 1 week and we had everything we need (inside and outside of the apartment). The kitchen has everything you need, though we didn't use it much. The internet connection was good also. We had to work from home a couple of times during our stay: slack calls, pushing/pulling code, discord, YouTube streaming - everything worked great.
The place is located in Berlin Mitte: close to Torstraße and Invalidenstraße. Those places have lots of bars, coffee shops and other nice places to relax or do some shopping. U-Bahn and S-Bahn stations are in close proximity.
Arik was very nice and communicative. We had to check-in pretty late, due to our plane being delayed when we arrived, and he was very accommodating.
All-in-all this is the perfect place to stay for someone on a business trip or on vacation. It's close to anything you might need or want to visit in Berlin, without it being in a noisy area.
We will definitely try to book this apartment again when we're back.
P.S: The cherry on top was the banana in the living-room that you absolutely need to experience.