Here's my TLDR on Vortex bowls. They'll work great, but there are better options. For this bowl in particular, the smoke will go for about 3-4 hours. And the flavor will keep deteriorating as more and more burnt shisha accumulates in the bowl. Skip it.
"Between funnel bowls and vortex bowls, I like funnels a lot more. Vortex bowls are generally considered inferior. This is because of the high spire of the bowl and the low quality ceramic that their usually made with, scorching the top repeatedly often leads to the spire breaking. Next, the holes in the vortex bowl frequently clog up (I used vortexs for about 2 years) and require you to clean it out. Finally, it's a ceramic bowl that isn't completely solid (many are hollow in the cupping area). Ceramic doesn't retain heat as well as clay, and the hollow cup of the bowl burns your shisha unevenly. Again. I used vortex bowls for 2 years and got really great smoke out of it. But since switching to higher quality bowls, I haven't turned back.