I can relate. The reason may just be the gloominess & closed in atmosphere or not. It is OK to tell your friend that you feel uncomfortable in a room with no windows and high ceilings, you can say you don't know why, it's not his fault but you would like him to come to yours (see how you feel about him visiting on your turf?) or meet up somewhere to do something------------If able, I think getting out and about would be good. If you are uncomfortable you are and you should, I think, listen to the feeling and acknowledge it. Or you can not mention the feeling and just suggest an alternative to going there --- it is out of your way...why not meet up?