If anybody is interested, I wrote a blog post about building an isometric map system using SFML.
http://www.gamedev.net/blog/33/entry-2250273-isometric-map-in-sfml/The system is fairly basic, the lighting very retro, but it uses basically straight SFML, no diving into OpenGL or anything. It's an update of code from an ancient, long-dead project of mine that hasn't really been thoroughly tested, but it was actually quite easy to bring it over to SFML. The blog post includes a link to the source of the demo, including bindings to Lua and a binary build of the demo, if anyone cares to take a look. It is built against a very recent (as of a couple days ago) snapshot of SFML 2.0.
Again, bear in mind that it isn't really code that I use in production, so I'm almost certain it has bugs. Any bugs, though, are most likely my fault and not the fault of SFML which I have found to be a quite excellent little library. Kudos to the developer.