Have an all-round good hotel, good community, stable emu and no exploits within the emu, cms, you need it to be a place where the users feel safe, most users nowadays don't like signing up for new retro's as I know quite a lot of the new hotel's around, the owners have been releasing their IP's...
There should be a file called exceptions.err or something like that in your EMU Folder/Files as Jay said, open it and copy and paste it all on here so we can know what error you're getting
Same as what Joel said, try and make it more unique, make it stand out from other banners so people think it's actually a unique banner as not many hotel's have unique banners if I'm honest, most banners are practically the same nowadays. But 7/10!
It's doing that because there's wrong link(s) in the CSS. Go in the CSS File(s) and make sure the links are correct, they might be pointing to a hotel that doesn't exist or a website that isn't around anymore