I used the pool last month, it has a great view so it appeared a popular spot for Instagram photos rather than actual swimming. It's not very big, and there's a couple of loungers around for people to chill. It wasn't that busy when I went (early Monday morning) and it felt like a nice bonus, but not a reason to specifically book this hotel. I have to say the pool looks a lot bigger/more impressive in photos.

Loved the hotel though! Would stay here again if choosing Marriott (I also stayed at the newly opened Pan Pacific on Orchard Road which was impressive, so might return there instead).