This is one of the reasons it's fascinating to me. We often talk about Mars but Venus is truly our sister planet. But it turns out she's a raging hellhole, the sulfurous evil twin of our lovely planet. Crazy stuff.
The fact that - as the other comment mentions - life could potentially survive in the atmosphere is incredible too.
The word "habitable" in that sentence should be surrounded by very, very large quotes.
There is a zone with Earth-like temperature and pressure, but the atmosphere is still poisonous & corrosive, I think. It's someplace we could probably put a human settlement, but it wouldn't be easy and would probably be as fun to maintain as the ISS.
Way less fun than the ISS, which is like stepping outside on a cold day in comparison. We will have colonies on the moon, Mars, and all the major moons of Jupiter before people are living in the clouds on Venus.
It's the closest thing to Hell in the Solar System apart from the Sun.