We stayed in 3 hotels in Singapore for a week each, long enough to get to know them well. The other two were 5 star properties but this Citadines definitely had the best staff at reception. They were so friendly and so helpful, answering questions, printing out documents for us, even scanning a couple of things we urgently needed. If anything needed repair in the room they had it fixed immediately. Five stars for service.
The room itself was a little disappointing. As a studio it was a bit bigger than average but unlike the Citadines we have visited in France, the kitchen was virtually unusable. Also it was odd to serve a (not very interesting) breakfast on weekdays but not on weekends but still pay the same rate on weekends - a fairly high rate as well. The gym is tiny and there is no pool, which you really will want in Singapore.
Nice to have free internet though, and a laundrette on site.
There are lots of cheap but not very good restaurants nearby. For better meals, walk 10 minutes to the Plaza Singapura mall which has nicer restaurants which are not expensive. The Citadines neighbourhood doesn't have much to commend it, to be honest.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC