What an unfortunate experience.... we had the opportunity to visit Sveti Stefan (but not the Aman, as the island was closed) last April... it appeared to be a beautiful beautiful place for holiday....
we had a similar experience 2 nights at an Orient Express hotel (albeit not as long, only for 10 PM-1 AM). They were quite apologetic and gave us an across the board discount on our stay and comped our spa treatments. I was quite satisfied with their service recovery.
FDW