Other than that, I've rented cars, rented other things with a "X will be charged to your card if you return it late", unattended gas stations... all the usual places you'd think need a credit card. It's fine.
We do have a "negative limit" that banks often give you, which means you can go into the red and pay it back later, but that has nothing to do with the card, it works even for normal bank transactions.
I too have a real credit card to be able to rent for instance "bigger" cars like even an Audi A6.
Most often hotels also block 500 Eur, or they state upfront that you need a proper/real credit card and not just a debit card.
That's for me the only reason I have VISA and use it like 3 or 4 times a year...