We booked Christoph's place for a bit more than two weeks and we really enjoyed our stay there. We chose the location because of professional meetings and it turned out to be great for both the meetings and visiting the city. Undergrounds and buses are close-by, but nice spots can be reach by foot.
We came with a toddler, and even though it was not avertised in the booking, Christoph made an extra care in adding some useful items such that a cot, a high-chair and some sensitive laundry. This has been much appreciated!
Contact with Christoph by text and e-mail was easy and fast.