@Serendipity0
I read a discussion recently on a hosting forum about how many very personal things are okay to be in apartment rented out on (semi-)permanent basis, like family photographs. The consensus was that if you don't live in the home, then it would be advisable to take away all such things. Although, if a host is a photographer, then having enlargements of own photographs as art on the wall are a different story.
But in view of your situation I could imagine that any artistic expression of a temple site or cemetery is bound to freak someone out...
Basically, I feel that in the case of an apartment that is the host's home and only rented out in absentia - I would not remove such an article. On the other hand, the pictures of your listing show an accommodation empty of personal items, so that as a guest I could expect a neutral environment. Hotels for that reason never have pictures on the walls with disputable themes. Although that said, what's with the bibles, Christian, Mormon or otherwise?!! haha.
Back to your case. In view of the fact that everything looks so neutral in the listing, do realise that a crucifix can be a problem for a number of religious orientations. Although a guest demanding removal like that would really bother me, in the end I think with a neutral rental only apartment or room a religious symbol shouldn't be there. Look at it from another point of view - a devout Christian probably wouldn't want to be confronted with a Santeria symbol in an accommodation, if it wasn't visible on the listing pictures.
As a guest I'd probably get out of there pronto myself if there were any Satanic ritual objects, but then I'd call Airbnb and ask to be re-located.
Should you be made to remove anything like a crucifix or other such object ( some religious denominations would probably completely freak at a beautiful nude painting!) out of sight in the home that you normally actually live in, then no, I'd regard that as an invasive guest wish.
In your case I'd remove the crucifix, not the photograph.