Thanks - I actually emailed them earlier as needed to add a day to my trip and ended up calling to give credit card details and had a chat with the Reservation Manager who was great.
The renovations were due to be fully completed in the next week (bit less) - I arrive quite early but she said she do her best to get me early check-in - although I be quite happy to go relax by the upstairs bar and do some work.
I got a great feeling from the call - hope the stay is as good.