I didn't hate it. Lets start there. Story is okay, (minor spoilers) you've got a pcincess who accidentally switches bodies with a bad ass mercinary, that's the majority of it.
The animation looks good actually but action isn't very long, they spend most of the battles with still frame shots that show someone doing some sort of attack.
I watched this in english and the voices weren't terrible. In fact I really liked Dominikov. Most of the music was guitar riff's and the like. They all fit the setting pretty well.
Characters were pretty cut and dry but to be fair there were only six episodes so they didn't really get the time to grow. Some are pretty awesome but there are some really terrible characters that balance that out.
Overall it was okay, some alright action sometimes, a super bad ass looking knight, and some rock music to accompany it. If you're super bored on netflix and watch to start something you can finish quickly, and want some action, this might be an alright pick.