We've had the bunkbed rooms before (and not concierge). You might ask about them in advance. This year they cautioned me that taller kids might not be comfortable in them - I guess they aren't quite as long or maybe because they have a footboard and headboard they may feel cramped.
My son is roughly 48 inches tall, and he found the bunk bed comfortable, but I don't think anyone approaching five feet would find them comfortable.