No mention of the route (landside) to the lounge.
What happened to the lift? Granted, it is small and slow, so maybe not enough capacity? Or perhaps the lift egress runs into the work zone...
I suppose if they didn't have another plan, there's not much that can be done. Not sure if retrofitting stairs would be any idea (like where will you put them), plus safety considerations, plus if the lift is out of action, you'll violate accessibility laws.