I did a test drive in a Prius around 2005. I absolutely hated it. Uncomfortable seats, annoying dashboard design, skimpy rear headroom, and poor handling. I was amazed at how much HEV design had changed when I took a test drive in a 2023 Niro.
For 2023, the Niro door lock design has been changed, so that there is no longer a black button, and the key lock is hidden under a cover at the back of the door handle assembly. I have mixed feelings about the change. It's probably more secure because you have to pop the cover to get to the key lock, but doing so is far from intuitive.