Every hotel I’ve ever stayed in has a different device in the shower/bath. I hypothesise there’s a krafterk in Germany somewhere churning out unique tap configurations for some nefarious purpose.
As to why they either have no hot/cold markings, or they are tiny and black-on-black or silver-on-silver so making them effectively invisible to your average >50yo customer without their glasses on, I have no idea.
Every faucet in my house and in every house I’ve seen in the past 20 years is like this. I’ve never had any problem with pressure control or unwanted rotation. I was actually surprised by the strip - as far as I’ve concerned, faucets are a solved problem.
Perhaps, though that’s not the formfactor mine had. It was those crystal-style knobs, but it didn’t just rotate. It would also tilt up and down. I unfortunately can’t seem to think of what to google to find a pic.
I’ve seen the crystal on sink faucets, too. But more often it takes the form with a single lever–at least, on kitchen faucets, like this:
I find both of those next to impossible to adjust properly. Any attempt to adjust either flow or temperature winds up affecting the other. Possibly I’m just a klutz.
I can adjust a two-handle fixture just fine, though.
Ditto, but with all those vertical shower heads out there it must appeal to some people. The text often refers to "rainshower’ or something like that. Note that they include am auxiliary wand for washing your undercarriage.
It depends as much on the ambient water pressure as anything. However, water-saver shower heads make things worse (counterintuitively). My parents live close to the pumping station and have excellent water pressure. That, combined with this head:
made for a truly painful showering experience. It did have a terrible little adjustment rod, but there was no pleasant compromise between decent flow and leaving the shower with red marks.
You are perfectly normal and correct that any single faucet control works unpredictably. Those in this thread who think single faucet controls work well aren’t paying enough attention to what actually happens when they use them. Perhaps it’s because of the feedback delay.
I use the handheld sprayer in my shower to rinse cleaner off when Im scrubbing the bathroom. I could use it at full blast and the world wouldn’t end but since I can adjust the pressure and temperature easily with my separate hot and cold controls, I don’t need to.