These are products I have experience with and like well enough to recommend. I don’t do this for the money, but if you click through from here I’ll get a commission that I’ll send along to support some of the great free and open source projects I also use.
My most trouble-free clients host their WordPress sites see. They also offer me great tools like git deployment to develop and manage sites with maximum effectiveness.
I often integrate forms my clients design using Gravity Forms with my Geo Mashup mapping plugin. There isn’t an “out of the box” integration yet, but it’s pretty easy for me to customize a form to create a located post.