My T has a therapy room in a purpose built wooden buiding in his garden. I like it. It's like a safe little cocoon.
My temporary T also has his office in a converted outbuilding at his home. It's also quite nice.
It is more convenient for me meet with Ts in their homes because I live in a rural area so I would have to travel further to find offices.
I had an initial session with a T once in a tiny room in a medical centre with no furniture except two chairs and a plug in heater on full blast. It was awful!