A/C for a basement

See this request from a 2nd Street NW resident:

I would like to install some easy A/C in the basement unit of my house. The windows are too small for a window unit, so I think my options are either (a) a mobile (rolling) A/C unit, or (b) one of those rather flat, wall-mounted A/C units. My problem is that there isn't a window to run an exhaust or water disposal hose. So what do I do? Does anyone have any suggestions? Thanks!