I found the following web site with pictures of Berlin churches.

It states the Greek Orthodox church is on Hohenzollerndamm. http://www.jellesen.dk/webcrea/places/berlin/church.html

My experience of staying in Berlin was at the Pension Peters. I thought it was good value for money. The proprietess had a good command of English and was an enthusiastic hostess for her adopted city. The Pension Peters is on Kantstrasse near Savigny Platz. It is a little way away from Hohenzollerndamm but perhaps not too far. The web site of the Pension is : http://www.pension-peters-berlin.de/engl/

You could e-mail Pension Peters and ask whether it was easy to get to the church or otherwise. We found public transport very easy to manage in Berlin.

Browsing the web I found the Hotel Avalon is near Hohenzollerndamm however, I can make no comment about the hotel other than its location.

Regards, Anne Canberra, Australia