I stayed at Kirill's place last week-end, so if you ever plan to stay with him ...
This is what you can expect:

First of all: Kirill is one friendly and caring person to meet, so it is a real joy meeting him.

The description of the flat is dead-on, it is just the way as it's described, with this special Berlin "Altbau" atmosphere that I like so much. And the location is great, just as described.

The bed turned out to be a convertible sofa, which was just ok with me; the "mattress" is kinda hard, not everyone might like that.

When it comes to taking a shower, that is a little downside. You can use the shower, but it only has cold water. Or use the bathtub, which Kirill told me has warm water. But I just didn't get it working for me, so I had cold showers. If you don't mind ... but that's the wonders of an "Altbau" ;) Probably some more renovation will improve that in the future ...

Overall I enjoyed the stay :)