I felt that $2-$3 every couple of days was a decent trade off from not having to carry additional stuff in a duffle bag. I have done that in the past. The one I’m in now has a mini kitchen and a coffee maker, but I never know where I’m staying until 30 minutes before I’m at the hotel.On the road it’s easy enough to use a cone and filters, but would require a source of hot water, which many hotel rooms will have.
I do not eat out on the road unless I stay somewhere long enough that I eat my whole food supply. If I’m there that long I’m back on the clock for being left there. My coffee is my one spluge, 3 times a week.