We have sailed Allure's sister ship Oasis twice. We have stayed in a balcony cabin on deck 6 both cruises because we are close to the gym and the promenade. Both cabins were on the port (left side) by the forward elevators on one and aft elevators on the last.
Lower cabins will keep you closer to the promenade, boardwalk areas, higher cabins to the pool and other upper deck options. One thing WE like about the forward cabins is that the elevators don't seem to be near as crowded as the other elevators. Also, the wait may not be as long.
8401 and 8411 are inside cabins.
I have pictures but can not access them at this time...I'll try again later.
We sail on Allure in 2 days!
Celebrity Eclipse March 5, 2011
Serenade of the Seas Oct 23, 2011