Where did the Money Go?!

Three men went on a business trip and booked a hotel room to stay for the night.
After paying $30 for the room, they proceeded upstairs to rest. Thereafter, the hotel headquarters called and ordered the rates to be adjusted to $25. The hotel manager then gave the bellhop $5 and asked him to return the money to the guests.
The bellhop thought that since $5 couldn’t be divided among three persons, he decided to keep $2 for himself and split the remaining $3 among the three guests. In end effect, the three men paid $27 for the room and the bellhop kept $2 for himself. This totals up to only $29, where is the missing $1?!