I mostly want to find "old Berlin", I believe that the area Prenalauer Berg still has many pre-war buildings. Last visit I saw much of Charlottenburg, so this time, its the east, I think. Oh and some German Bier might be good. Any tips appreciated 🙂 John
On the first day, walk down Unter den Linden to the Brandenburg Gate, walk through that, turn left and walk to Potsdamer Platz. This route will take you right through the center of the city, with absolute boatloads of interesting sights in any direction. Take note of what interests you and check those out in detail.
One thing I've always loved about Berlin is the wide variety of architectural styles represented throughout the city. I would recommend checking out as many of the different buroughs as you can, making stops wherever you want to explore the surroundings. If you're staying near Alexander Platz, you will have easy access to whereever you want to go.
Concerning beer: Since you'll be in Germany, you'll find it is close to impossible to drink beer that isn't fantastic. Try to taste all the different kinds (Pils, Weizen, Bock, Export and so on) so you get a fairly broad view of what the country has to offer. Be careful to avoid beer that comes in green bottles.
If you have or develop any preferences, I can make more specific recommendations.
Also, will you be shooting film? I'm asking because there's a fairly decent shop near Alexanderplatz that I've been buying from for ages, so if you ever run out, you should pay a visit to Fotoimpex.
