If you are likely to be away for an extended period, please let the Concierge know. It is helpful to provide a local contact who can deal with any problems. You are advised to turn off the water in your apartment before leaving (the stop tap is usually in the boiler cupboard).  If anyone else is likely to be using your flat whilst you are away, please let the Concierge know and arrange for your guests to let staff know when they arrive and leave.