Hot or cold, just not room temperature. Sometimes when I drink room temperature water I feel like I taste something other than water. I prefer cold water but I don’t think it’s weird to drink hot water. Aside from it used for tea, being served hot water at restaurants is pretty common (at least in the asian countries I’ve lived in). Hot water is usually free/refillable and ice water is extra.
I didn't even know people drank hot water outside of using it for tea, etc. I don't think I could drink it hot because I don't like most hot drinks anyway. I prefer all of my drinks to be ice cold, with the one exception of hot chocolate.
I drink water with ice most of the day at work. At home I don't usually keep ice, so if my water gets too close to room temperature I pop it in the freezer for a bit to get it super cold again. When water isn't cold enough, it seems to have a slight flavor to me that I find unpleasant.
Cold water is my preference. Whether it has lots of ice or no ice, I just love that cool feeling I get when drinking it. Even on days where the temperature is really low, I'll still have cold drinks.
It's always been cold for me unless I like to drink hot tea. I actually tend to gag a little if I ended up drinking lukewarm water. It feels weird despite it not having any taste.