Chef Roberto Deiaco and his wife Giselle are building in the space of a former legend — and expanding their brand to the Upper East Side. The couple recently opened Avena Downtown in the Sixth Avenue location of onetime hotspot Da Silvano, a Page Six staple that opened in 1975 and served everyone from Donald Trump and Yoko Ono to Rihanna until it closed in 2016.

Now the Deiacos are adding an informal rustic Italian restaurant next door: Osteria at Avena Downtown, which launches this week, in a shared address of 260 Sixth Avenue. In addition, the Deiacos plan on opening another Avena — after shutting down one in Midtown — inside a townhouse at 22 E. 66th St. this summer.