I find the Hop On Hop Off bus tours in Berlin are becoming obsolete and a tourist trap. Bus 100 and 200 will take you to most sites on their route from Zoo Station to Alexanderplatz and Prenzlauer Berg, Michelangelostrasse. Also the transit system in Berlin is cheap and convenient. By taking Berlin's transit system instead of bus tours you will save a good amount of money.
There is a small tourist information kiosk in the airport, but all we got there were one-word-answers, which did not actually help to anything.
No brochures, no maps, no info about transportation, no info about hotels.
Fun Alternatives Be well prepared on your arrival to Soenefeld, so that you don't rely on the information services here.
On 19:00 o' clock in the afternoon on a working day, there was no personnel staff for tickets/information. Nobody to answer to a few basic things. Not good signing and no info displays on the platforms.
It was supposed that I was taking the "Airport express" line, but there was no sign that indeed this line had regular departures.
There were some printed schedules, but there were not clear to a person coming first time to the city.
Tickets were sold by machines. I saw too many people to wander around the platforms, trying to understand what they should do.
Unique Suggestions Before arriving have a clear view of the lines you shall use to go to your final destination. Have also an alternative - A good one is train line S9 to Spandau which runs across the city.
Sometimes they can be tourist traps, there are lots of companies which offer scenic tours around the city, but the cheaper way to do this, especially if you have a Berliner friend who is willing....is to take a public transport around the city, stopping or getting off as needed to take fotos, etc. As most Berlin pages on VT might tell you, taking Bus 100 is a good way to look around at some of the major sites of the city along a certain path.
If you do, be sure to go to the upper level of the bus where you can get a better view. Before a person could stop or get on at whatever point it stops at going either way on the line, but now you can only go one direction I was told. Some of the sites you can see along Bus 100 route is the Reichstag, the Kanzler´s residence (the foto is of it, flags flying if he´s in) , the Victory Column, Tiergarten oh and lots of other stuff too.
Unique Suggestions If you do decide to use a sightseeing tour just be sure you know where they are suppose to be taking you and what you going to see really if you have specific things you are interested in. There is a nighttime tour thats really great I heard....
Fun Alternatives Take public transport instead, different numbers and lines, you get to see around the city lots of things just like with a tour especially if you have a "Berliner" friend who can point out some highlights.