The problem with GCBC is they cannot guarantee any specific floor choice. Make your wishes known and they will try to accommodate but no guarantee .
We have only requested an oceanview studio and we've always gotten something in 100 building but never on the same floor. One year we told them hubby had a hip replacement and they tried to get us into 1st floor since they do not have elevators. We had to spend one night on 2nd before 1st was available. But they did try.