Do you choose you stateroom solely based on price?  We try to stay in the middle of the ship low down if we can especially if it a transatlantic cruise.  We also try to stay away from elevators.  Many passengers choose to be near them so they don't have to walk far.  We will not take an obstructed view or an inside cabin.  We also don't want to be close to the theater, luggage storage rooms or public bathrooms, etc..