There are no bellboys anymore, so the so-called Bellboy, already pretending to be someone he wasn't, is the logical candidate to steal the dollar. If it really was a dollar. After all, who can get a 3-man room for $25 or $30, unless that's an hourly rate in which case I don't really want to know what was going on, and the men would be too distracted or embarrassed to count the change.

Or am I reading too much into this question?