NASA Study Proposes Airships, Cloud Cities for Venus Colonization (2014)

This older study (2003) provides excellent, succinct background:

Colonization of Venus by Geoffrey A. Landis

https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/200300...

Although the surface of Venus is an extremely hostile environment, at about 50 kilometers above the surface the atmosphere of Venus is the most earthlike environment (other than Earth itself) in the solar system.

I find this more interesting than flying to Mars. Pretty cool.