

They’re not as common. I think most people either use a coffee maker (for coffee), or their microwaves to heat water. However, I have an electric kettle in my office for tea. One thing you may notice in the US vs Europe in that regard is that the standard outlet is 120V, so most small appliances can’t pull as much power as their 240V counterparts in Europe. So my electric kettle is probably a little slower than yours.
I have a DS923+ with four Seagate 8TB drives in it that I really like. It’s easy to use and offers a lot of services.
However, like others have said, I do not recommend it for new purchases. If I were to do it again I would most likely set up an old PC as a server (though I went with the Synology mainly for power use reasons).
Synology is getting increasingly customer hostile, and from what I’ve read online their Linux version is so full of bespoke patches that they have painted themselves in a corner it will be hard to get out of. So, they’re likely to fall behind on keeping up with third party software. Their software is usually pretty slick and easy to use, but they discontinue things every few cycles.
The main thing I still use of theirs is Synology Drive, which was a pretty seamless move from Google Drive. On the flipside, their stuff is proprietary, so getting off of their platform can be challenging.
For my self-hosting needs I try not to tie anything to the Synology and just use it as a plain NAS. I use my Raspberry Pi or a VM instead.