I host the production site I'm working on at Gigalixir[1] (with the postgres DB in Google Cloud) and it's been pretty sweet. Deploys have been trivial (the way they should be, if you aren't interested in also becoming a devops expert). Jesse Shieh is extremely responsive and a committed founder. Unlike Heroku, Gigalixir does not restart its servers nightly, which is very relevant if you store any state app-side (such as a cache).