I'm not sure about the bandwidth limitations, but <a href="http://fateback.com">FateBack</a> is free, has 60 MB disk space, no ads, and file transfering of some sort. The only limitation I know of is that the files can't be over 200 KB.

Or, if you know someone who has one of those really spiffy sites with their own domain and stuff, you could ask nicely if they could host your site.