Yes, lots of people have confirmed successfully installing Hakchi2 on their EU SNES Minis, in this thread.
Note that Canoe (the built in emulator) is based on a US NTSC SNES, so if PAL ROMs have region protection enabled, they won't play. There's a link containing a list of PAL only ROMs and information on how to remove protection and also convert them to NTSC as well, so they run at 60hz. I would post the link, but can't as it's flagged as spam...
Thanks for the quick response. Just so I understand, so if I only have US NTSC ROMs, I should be able to play them on the EU SNES Mini yes?