Bad customer experience. Room booked well in advan...

Bad customer experience. Room booked well in advance only to be told none available on the check-in day after a long flight. Was moved from room to room (not simple when travelling as a family) because they gave our room to someone else. They seem understaffed and systems out date to cope with peak demand of summer. Given the lack of customer service and attention to this matter I would suggest that it is not a once off and it happens far too regularly. Will be visiting the Sheraton next time as my expectations were exceeded when staying with them.