Wolfgang is a very warm, welcoming, interesting guy. his place is beautifully designed and very lightened.
the place is located in a quiet street just outside of the train station.
there are nice restaurants outside of the door, and your just a walk away from a living market and pubs area.
he helped me in getting around int the city and translated any germane problem i had to deal with.
i contacted Wolfgang in A VERY short notice, and yet he was available for any question until i arrived couple of hours later.
if i'd come back to Berlin, this would definitely be the place i'd go to!