Some great natural riding in the area too though. If you have time and a GPS I’d be doing Loop of Llyn Cowlyd
I did that route a couple of weeks back! Really enjoyed it on a sweltering hot afternoon, although being from the South I don’t get much practice riding rocks – by the end my rock-skills had progressed from “pitiful” to “poor”.
The road descent to Trefriw was a strange finish to a MTB ride, dropping nearly 400m on tarmac. Great fun for a road though, loose, very steep, loads of hairpins, would be scary on a road bike. Would also make an epic road climb!
As for Penmachno, holds up very well in the wet, one of my favourite trail centres.