nice, I like the tones although it does seem to me to have a slope off to the right. the grain on that post box is awesome. I see you also got an electrical box in there too, you sure this is Berlin? the wires trailing over the doorway look distinctly Indian!
The orange and yellow are a nice pop of colour - you could even try desaturating the whole image a little, not to B&W, but just a slightly less saturated look - maybe even a tinted look....
So we can imagine conversations like;
"What are you doin' mate?"
"Re-routin' the sewer. What about you."
"I'm outside the Vodaphone shop, trying to find a toilet!"