It is located in the 1960s Harry Seidler-designed Gemini building in Potts Point.

The acquisition of Victoria Street, through her investment firm, cost $950,000 through Richardson & Wrench agent Angelo Bouras.

Thomas downsized from Point Piper Harbor to Rushcutters Bay when she changed trees in 2021.

Her recently purchased one-bedroom, 38-square-foot apartment has views of the city skyline, including the Opera House.

It rented for $665 a week last August, down from $680 a week in 2019.

It was snapped up before the auction, when it was guided at $920,000, having previously traded for $745,000 in 2015.

A one-bedroom, one-bathroom apartment on the immediate fifth floor, which sold for $465,000 in 2011, will be auctioned by Ray White next week.

The complex has on-site contested secure parking and is popular with short-term lodging investors, with 18 key boxes in the front.

The complex has only studios and one-bedroom apartments and was built as serviced apartments. The most expensive apartment fetched $1.04 million in late 2021, one of only two sales over $1 million.

The complex takes its name from the astrological sign of Gemini, which according to ancient mythology was made up of twin brothers, Castor and Pollux.

The median unit price in Potts Point is $906,500, up 1.7 percent over the past 12 months, according to PropTrack.