We were 7 people and we were all very satisfied with the apartment.

I didn't get to see Ralph personally, but it was all organized well.

a few minutes walk and you'll be at underground station "Mehringdamm". Right there you'll find Curry 36 and Mustafa's Gemüsekebap. Both are great!

The appartment wasn't cold as I read in some previos feedbacks. It has a good heating system and even a (fake) fireplace!

I definitely recommend this place!