You don't really have any special hosting requirements, other than maybe seeing that they have decent gallery templates. It could be a free host with limitations or some paid site builder that simplifies things a bit, like Weebly.com
You can see examples of sites using the popular free Google Blogger.com with this Google search:
site:blogspot.com intitle:artist
There are artist communities like Deviantart.com where you can sell art that may help you get more visitors.
