The apartment is a great choice for a long weekend in Berlin. It's located in a quiet neighborhood with very handy transport to anywhere in the city...you can't go wrong with this location! The decor is basic but the apartment is clean and you'll have anything you need for your stay, including wi-fi! Although we didn't meet, Yves made sure to provide us with all the info and details needed beforehand. Communication was excellent throughout and his friend Julien kept in touch during our stay to ensure we had all we needed. Check-in and check-out times were also flexible which made it a lot easier for us.
Overall, I would definitely recommend this place. Just keep in mind that the living room faces the street, as Yves also pointed out in his listing, so you might need to keep the shutters down more often than not.