We've stayed at Meike's house for 4 nights and 5 days. We have totally loved their place. The house is super clean, bright and comfy. The location is awesome: you have one metro station just in front of the door (and you are 10 minutes away from Alexanderplatz).
We just saw Meike the first night but she was very helpful and she waited for us until we arrived (at 2 am!!).
I would totally choose their home again anytime.