Well, the pool of Mandarin Plaza Hotel is small. Maybe about the same size as Parklane Hotel. However, at least Parklane can give you some privacy.
The WiPro building in front of Mandarin Plaza Hotel (see photo above) is suspect to voyueristic eyes ;). Anybody can peer out the window and see you. Men may not care but some women who are conscious with people staring at them wearing a bikini may find this uncomfortable.
The pool's depth is 5 feet and spans in a rectangular form. Not too spacious.
I guess this pool is for kids only.