You need graphics hardware for Gazebo to render properly. The need for powerful graphics will grow as your environments get more complex.
If you can render locally and use a remote server that’s great. This post is about running both the client and the server remotely :-)
Floydhub are more oriented towards DL as a service, and don’t offer Desktops that you can use, so running Gazebo is not possible (and I am not sure they offer a way to customize the available environments).
As for Paperspace, they offer a limited range of templates that you can use to…