Type in the google search box ' free image posting'. The building being used as a reflector will be best if it is a few blocks away. And the building sounds very close , closer then a few blocks. It is important to understand that you are not just simply pointing a antenna at a building -- you are thinking about angles and reflected angles and distance to receive a Tv transmission. The antenna I suggest is the Antennas Direct 42XG. You will need a length of coax to go from the balcony to the Tv. The Tv transmissions at your location are VERY STRONG -- OVER THE TOP STRONG. DO NOT use a antenna that has any type or kind of amplifier. No built in amplifiers No add on amplifiers, NO means NO. The amplifier Will Over Load from the strong transmissions and bee the cause of bad reception. Read and understand this about indoor antennas ,
http://forum.tvfool.com/showthread.php?t=233 . You can also point the 42XG at door of your apt. . The transmissions are so strong at your location that I recommend a variable attenuator part # 1296F. You can buy the antenna and attenuator and a length of coax at
http://www.solidsignal.com