Thanks for the questions.
I think most important is location. Relatively close (within a few blocks) of MRT. I liked being able to walk from the Parkroyal to the river area and Marina Bay area.
I tend to like more modern design, so I prefer that to a more stuffy, colonial style.
I like having a bit of space but I will be solo so that's not a huge deal, as long as whatever space I do have is well-designed and thought out.
I don't use fitness centers and that sort of thing so those kinds of amenities are not important to me. I do like a breakfast though.
For the Parkroyal, I just didn't think it lived up to its aspirations. Service was haphazard. The room was nice and big. The club breakfast was good though. I was paying US$300+ per night which was too much for what it is.