It's very subjective - we are currently living with my parents again and downstairs there is a defective, older underfloor heating system. It used to deliver about 60 degrees to the supply line for a while - you could almost cook eggs on it and my parents said it was "just a bit warm". Nowadays it works again, but generally the supply temperature is too hot and that’s unpleasant. It used to be like that often, and that's where the opinion about the "swollen feet" comes from - which was no surprise.
Today's underfloor heating systems run almost unnoticed...
Upstairs we have classic radiators and they warm up very, very quickly. But besides the familiar smell of heating (my childhood), the warmth is very unpleasant - it blasts heat.
Here too, something has changed with a lower supply temperature, but just the ugly things that simply take up space...
There are also wall and ceiling heating systems, although they are not cheaper. I don't know the latter, but I somehow imagine it unpleasant as well.
:
You have underfloor heating on the stairs???