I found those in Germany, I guess those are ok?
Plus, this kind of tap without a hose, is it recommendable?
If they're the same threads as the outlets of your CO2 regulator, then yes, but again, not knowing that thread size I can't say. I wouldn't personally order anything based off of a fuzzy picture.
I wouldn't use a faucet without lines, but that looks like a flow-control, so maybe it would work. I know there have been a few discussions of that general type of faucet, so maybe someone with experience will weigh in.