By Charlene Chin/ EdgeProp Singapore|February 21, 2020 7:58 AM SGT The seller of a unit at Watermark Robertson Quay, on Rodyk Street, made the top gain over the week of Feb 4 to 11 (Credit: Samuel Isaac Chua/ The Edge Singapore) SINGAPORE (EDGEPROP) - The seller of a unit at Watermark Robertson Quay, on Rodyk Street, made the top gain of $1.47 million over the week of Feb 4 to 11. The 1,916 sq ft...