Christophe's apartment exceeded our expectations from the photos. It's very clean, homely & cozy, and is very well equipped (i.e. clean towels, clean bed sheets, well stocked kitchen/bathroom etc). The location is great, in that it is close to U Bahn station and bus stations, as well as key amenities such as the grocery store and cafes etc. Also close to Mustafa's and Curry 36 which seems to be on every must eat list.
Christophe was also very accommodating with our request for an early check in and communication was quick.

It definitely was a sanctuary after days/nights of exploring Berlin and would not hesitate to stay there again.