I had a very good stay at Ong place. The apartment is located at the center of Chinatown, right at the Chinatown MRT stop close to all the highlights in Chinatown. The room is small but clean and the apartment has 3 bathrooms so sharing with other guests was never a problem.
Ong was waiting for me when I arrived and she shared detailed instructions to find her place, I had no trouble getting there. Overall really good value for money, not fancy but clean and functional, just what you need if you plan to be out and about all day and just need a place to sleep.