Well, looks like the hotel got around to my reservation. Got this email from Booking offering base King room for $209 (maybe $50-60 discount of regular price for my days):
Dear ...,
Thanks for choosing Booking.com.
We tried contacting you by phone to discuss an error in the rates for your booking with The Ritz-Carlton Key Biscayne, Miami, but weren’t able to reach you.
We apologize on behalf of Booking.com and The Ritz-Carlton Key Biscayne, Miami for this error. The actual rate for The Ritz-Carlton Key Biscayne, Miami is 699 USD per night(tax excluded), and not 119 USD per night(tax excluded) as stated on your reservation.
We ask for your understanding in reaching a middle ground. The property has confirmed that they will offer you 209 USD per night(taxes excluded) and change room type to Superior King Room .
Please consider this offer, and contact us at your earliest convenience to confirm your acceptance. We thank you for your understanding and are available 24 hours a day to help find the best solution.
Thank you again for choosing Booking.com.
Sincerely,