Leo’s apartment is really a wonderful place in Berlin. It felt very private, was a great residential location, and is next to a U-Bahn line, so you can get anywhere in Berlin very easily.
There are some really great bars and restaurants nearby (and decent nightlife) in walking distance, even though the apartment itself is on a very calm street.
As a host, Leo was extraordinarily accommodating, made me feel comfortable and welcome, and went above and beyond.