Can't comment on Hyatt, but the vibe from W and RC is very different, having stayed at both since April '18. I found the bed more to my liking at RC - W seemed too low. The 'bathroom' at W in non-suites is also formed by a curtain, which seems a weirdly cheap option, but fits with the ultra-modern aesthetic. RC is very much contemporary on the inside - many neutral tones. Seems like everyone at the RC is coached to greet you as soon as you are seen - less so at W. If it matters, RC has nespresso in-room, while W only has coffee in the bar. RC lounge is very nice, as you would expect at the price point; W does not have one to my knowledge. A colleague mentioned to me that there is at least one suite at the W to which she was upgraded that had a foosball table. Both the RC and W have outdoor pools; W's is on a higher floor but closes earlier.