Astrid is very nice and welcoming, always responsive and did her best to help us. unfortunately we had only a pretty short stay since we needed to checkout at 3 a.m., but that was no problem for her as well.
The place is awesome and the location is amazing if you need to take an early flight, 15 minutes with the bus to BER and about 45 minutes to Berlin TV Tower.
Thanks Astrid, it was a pleasure staying in your stuebchen :)