I emailed Bankside to ask what would be open next week, and it sounds highly unlikely that the lounge will be open, but I don't think that is a final decision.

They also said that the replacement offering was still being decided, but if this review from last year is anything to go by I guess it will be a bento box and drinks in the bar.

The good news however, is that the bar, restaurant, pool and gym will all be open (the latter two to be booked in 45 minute sessions once you arrive at the hotel).