Afternoon Challenge

I have orientation at 3:00. They sent me a map with my destination, the Global Lounge, clearly marked. So what's the problem? Take a closer look at the map: no street names, no legend to identify the other numbered buildings. And I don't know where the building where I'm staying is located. Not sure even my little compass can help me with this one... (I am traveling with a photo of my current address, however, just in case I get really lost and need taxi intervention to get home.)