The conference hotel in Surrey has been closed for more than a week after the River Thames burst its banks on 7 January, resulting in the Runnymede-on-Thames cancelling events, as reported by C&IT.
The hotel's car park remains underwater and the A308, which the property is located on, is still closed.
Further events have been relocated this week, including a four-day conference for 90 people and an awards dinner for almost 300 guests.
Andrew Duggan, marketing manager of the Runnymede-on-Thames hotel, told C&IT: "The water has dropped by almost three feet in the last 24 hours and we are starting to see the tarmac in the car park again. We have 12 members of staff cleaning up debris that was brought in by the tidal wave and roadsweepers will be coming in tomorrow.
"January has been very busy in terms of event bookings so it's a shame we have had to relocate them. Events will start taking place at the hotel again from this Friday (17 January)."
The hotel has confirmed that its spa has reopened today, followed by its two restaurants this weekend.
The interior has been unaffected by the water and a core team of staff is taking calls and updating the hotel's website and social media channels with the latest news.