The upside; really handy location, very close to amenities and public transport, spacious apartment with eclectic layout, responsive host. The cleanliness was hard to fault with spare towels and plenty of cleaning products including toilet paper.
The downside; there were firecrackers let off every night, would find 1 or 2 in the front lobby every morning. Random shouting and arguments from neighbors, the police arrived one morning accompanied by sirens. The kitchen could do with more cookware and utensils.
Overall good value and a good short stay in central Berlin to discover the city.