Original Neukölln hub, love the dark blue-green ceiling, all the arts and crafts, People day hi to each other in the building, the area has all the best coffee places, bars, restaurants, markets. Christo is super friendly, easygoing, flexible with check-in and out and help during my stay.
I Can only recommend his place :)
This is airbnb the original way, Where people actually rent out their own place, loved it. (not some new extra white surfaced flat with no life lived in it..)