The keyboard is very nice. Short travel for keys but pleasant to use. I use iwd as the wireless deamon and wifi autoconnect works just fine. I do not have bluetooth headphones so cannot comment on that, but my bluetooth mouse works as expected.
Battery life depends largely on how you use it. I have a minimal setup with alpine linux/i3 and just typing in a terminal with screen at 33% brightness results in battery-reported power consumption of just under 2W which is great. Obviously a browser like firefox will impact it quite a bit. Hardware-accelerated video playback works fine.
There are a few minor downsides: the built-in speaker is quite awful (not a consideration for me), the webcam is not great and the microsd card reader is usb 2.0. UEFI secure boot is currently not supported on the coreboot fw. The documentation is sparse.
One weird gotcha is that the power button is one of the keys on the keyboard, so to avoid suspending your device accidentally it will only fire an interrupt after you hold it for a couple seconds. Took me a while to figure out.