It really depends on your usage. In my case the phone lasts usually around 3 days, sometimes more, sometimes less. I also haven't experience heating problems. I don't like under the screen fingerprint sensor because of the position and at night it always flashes a bit, which is quite anoying. I prefer the Pixel OG sensor on the back, which worked perfectly, was fast and I didn't have to check if my finger was rightly positioned. However, the 6a sensor works really well, I just like the old one better.
In my opinion Google improves the Pixel phone a lot, but ruins the experience at the same time. Security improvements are excellent, the tendency to make phone bigger and heavier is (for me) bad and removing the physical scanner on the back and 3,5 jack removal are stupid choices.