My wife and I have a one night stay in Istanbul coming up in June. Any experience with these hotels? I have some Wyndham points to burn that I'd like to use before the devaluation, but my wife is a Marriott employee and we can stay at the W for E143. We could also get the Ritz for E150. We're platinum so we'd get the free breakfast 9at the W but not the Ritz). What other hotels within the Bonvoy, IHG or Wyndham would you recommend (we're platinum at all 3). We want to try to take in the main sites and will have 2 full days (1 night).

Thanks in advance.