https://www.sammyboy.com/threads/samster-contest-guess-the-hdb.319360/
Yes it does seem so. Google Maps street view confirms it.
The block number of the HDB flat in the photo was Blk 879A. The easily recognizable zig zag lines on the building's side wall.
And her unit faces the nearby condo 'The Santorini', possibly a corner unit. Height suggests level 8 or 9.
Seems like a nice place to live, although a bit far off from the malls and the Tampines Hub further east. It is actually closer to Bedok Reservoir.