 Nothing everything was great 
 The staff could not have been more helpful We arrived at 7 am after a very long flight from Sydney and were allowed to shower and rest in another room as our room was not available yet The door staff were incredibly friendly as were reception Restaurant was booked out on the Saturday evening but they let us have dinner in another room Im gluten intolerant and great effort was made to accomodate me at breakfast Could not fault anything Will be using this as our London base every trip now 