No, you are not being crazy. You probably had a strong emotional reaction to finding out about the change because, like you said, the original office is your safe place and now you are being taken out of that comfort bubble and being placed in an unfamiliar environment. I'm assuming you worked through some difficult feelings and situations/life events in that original office so it is normal that you may have some attachment to it. I feel very attached to my safe places for the very reason that I feel secure in them; when I'm in them, I'm in my own little world where nothing and no one can hurt me. But sometimes what makes a place safe and comfortable isn't the room itself, it's the people in them (i.e. your T).

Your T isn't changing, the room is. The original office was at one point new to you and you adjusted. I have confidence that you'll be able to do the same this time around and adapt to this change.