Everything went smoothly. The apartment itself is quite pleasant.

Prospective guests who are unfamiliar with Berlin but accustomed to bustling cities like NYC might want to know that the immediate neighborhood of this apartment may not feel as close to the center of the city as it actually is. The block is entirely residential and very quiet. (If you're hungry and don't want to go far, there is a supermarket and places serving currywurst within walking distance.)

The apartment building is a utilitarian nine story concrete edifice that spans much of a long city block, and is part of a complex of equally massive, nearly identical buildings -- no doubt the product of central planning under the former East German government. The brutalist aesthetic of the buildings is softened to some extent by the trees and grass that surround them.

The walk from the apartment to Potsdamer Platz is very pleasant and worthwhile.

Overall I definitely recommend.