 being shuffled to another hotel at the time of check in and back next morning we travel all the time and have been to around 70 countries and always book everything in advance month or two or even more we heard from taxi drivers and people overbooking is a common practice in London NOTE at the time of booking I mentioned our flight arrives around 9pm and we will be at the hotel late around midnight We have stayed in many hotels in London mostly around Oxford street or Knightsbridge in the past 
 location and cleanliness 