Xiaomi and Chinese brands are fine for occasional work, and what others said is true, but it's not just about "they work, period." What really matters is whether the drill holds a charge and whether you can easily find replacement batteries when one dies. With Xiaomi maybe everything's perfect on the first charge, but after a year when you need a new battery it becomes a pain to find one at reasonable prices, especially in Italy.
If you're really only drilling a few holes (like occasionally hanging up a couple of shelves), then yeah, spend 100-150 euros and you're good. But if you're thinking you'll use it more often over the next few years, I'd honestly rather go with a brand that has a guaranteed ecosystem of batteries and accessories. DeWalt and Makita cost more, sure, but you can find their batteries anywhere and used ones still work fine. With the Chinese brands the risk is ending up six months or a year down the line with a drill that won't charge anymore and nothing compatible on the market.
So before you decide, I'm wondering: how many holes are you actually planning to drill? Are you talking about two or three jobs or do you think you'll use it every month or two? That's what really makes the difference in what to get.