I have. Mosque not 100 yards from where I live . It is purpose built and causes no problems to anyone.
The witness view of a Kingdom Hall is very pragmatic. It is a building, a material place to meet in . They have it , use it as long as they need to and then dispose of it… that’s all..
It is the congregation that matters, not the bricks and mortar.
NB… is there a hint of Islamaphobia on this thread.?