The apartment was exactly as pictured and I concur with many of the reviews of previous travelers. It was a great place to stay! The apartment was comfortable, secure, well-appointed, and in a great location. The main bedroom was super comfortable, as was the main living quarters. The only difference is that, in my case, the courtyard was not necessarily quieter than the street owing to some revelry from the neighbors, but the weekend is the weekend everywhere and often cause for celebration. The kitchen was well appointed, with everything one could need, and the washer and dryer were very nice to have as I was into my second week on the road. I appreciated as well the three news channels in English so I could keep up with what was happening at home. There was a hitch in the wi-fi halfway through my stay and Marcus was very responsive as I did what I could to troubleshoot the router. We didn't quite figure it out, but that's okay; I appreciated how quick he was to respond.
Regarding getting around, the apartment is 5 minutes walk to the U-Bahn, S-Bahn, and a tram line - so it's remarkably easy to get just about anywhere! Take note, though: the station at Schönhauser Allee is actually two locations: traveling from the apartment, the U-Bahn is on the upper platform to the right side across the street (which you can see from the street) and the S-Bahn is found down a short alley to the left in between shop building fronts. It kind of looks like a shopping center entrance. It's not immediately apparent unless you're looking for it. You're welcome. :-)
Traveler's Tip: If you're there over the weekend, DO NOT MISS the flea market at Mauerpark. You can spend all day there perusing the finds at the market, walking along the wall up on the bluff to watch the artists at work, just hanging out in the park, and (when the weather is nice) watching the amazing outdoor karaoke.
Also, I found that when in doubt, a good meal is guaranteed at the Spreegold just a few minutes walk past the metro station.