I can't help with iPhone, sorry.

Two Variants is overkill - use Scale to Fit Width and a single 640px Mobile size.
I would avoid the use of the HighSlide carousel as you are duplicating images and photos for little benefit as you have not added any Title or Alt text or other description and have ignore the built-in carousel features.
None of the images or photos have Image Filenames.
As the pages are tall, you need some up/down navigation.
It is not a Supersite as you have separate index.html, index_photo.html and index_info.html files published into the same folder.

Acorn