Parker was a communicative, awesome host. We didn't meet him, as he was travelling, but his neighbour let us in and was super nice and helpful. The flat was perfect for five days in Berlin, and is really well located- only five minutes walk to the U-Bahn and between busy neukölln and lovely, leafy rixdorf. We loved the little outdoor balcony- perfect for a drink on a warm summer evening, and the flat had tons of space!
Something things to consider- the casino downstairs is audible from the bed, so if you're a light sleeper that might be an issue.