Shameless plug
Excellent article, and I agree that the place is well worth a visit, as is King Arthur's Labrynth.
And the shameless plug...when going from Machynlleth to Aberystwyth (or vice versa) do stop off at Caffi Cletwr in Tre'r Ddol (half way between Mach and Aber). It's an excellent community-owned and run cafe and local shop (with a surprising range of tasty stuff), staffed mainly by volunteers, and a venture well worth supporting. [Declaration of interest: I'm one of the volunteers!] Oh yes, and there's free WiFi (have to include the IT angle).