One unique feature: often have direct lift access to the skybridge level. That means:

Beyond the unit itself, living in a 5-room flat here includes access to unique communal features: Pinnacle@Duxton - Singapore - NLB

: Unlike many HDBs, units here feature full-height windows and, in many 5-room variations, a balcony or planter area to take advantage of the CBD skyline views Unique Variations

You're looking for information on the 5-room floor plan of Pinnacle@Duxton, a popular residential development in Singapore. Here's what I found: