For a simple responsive website I advise WordPress. It’s fun! With webdesign I do literally mean web design. I can make a clean website in html or Dreamweaver.
My business partner Peet Stolk from Base Unit can build, host and develop your website. He is very experienced with a.o. PHP, MySql, HTML, CSS, Realbasic, Filemaker en AppleScript. Here are a few of his examples: