Plenty of hotels I've been throughout Europe uses them, it's also easy to spot in the room pictures before booking usually. The most pleasant system I've tried

Plenty of hotels I've been throughout Europe uses them, it's also easy to spot in the room pictures before booking usually. The most pleasant system I've tried is Grohe Smartcontrol which I've promptly installed in my house after trying, too bad they charge an arm and a leg for colored options, but plain chrome finish can be had for reasonable prices.