Is there a Windows free (= libre) SSH (and SFTP) server that would also publish itself on avahi/bonjour? (So that the services can be discovered on the local network without much trouble and used for file sharing with (guest) laptops.)
Since I have problems with Windows and Ubuntu 12.04 seeing (discovering) each other's samba services (similar to Ubuntu Samba server not discovered by Windows 7, Unable to browse shares on a Windows 7 x64 computer, http://askubuntu.com/questions/130522/windows-7-and-ubuntu-12-04-cant-connect-anymore), I'd better not try to solve these problems, but better go with more familiar protocols to make and discover services (ssh, sftp, ftp) on LAN, like avahi/bonjour.