Jury still out to whether to use Google Sites or Weebly for quick web development plus hosting.
Just discovered that I can use horizontal menu when making web pages with Google Sites. Also you can turn off sidebar which means a lot more space can be used by your content. See my Photography site where I have reworked it using the above.
However I do worry that Google Sites is getting harder to find on Google Pages. Currently the only way I can find it is to go to G-Drive and then it appears in the more.. Tab.