The W Seoul was stunning and luxurious. The W HK too is funky luxury. These were among early
ones I believe. The W Istanbul, W SF are 4 star funky and seems to be what the brand is now - funky but cheap build out that they somehow charge a premium for.
Ws concept that was good when launched but now commonplace. I've too old for them now but understand the appeal to younger folk.
But the service at all Ws I've found to be snotty except for Istanbul.