Just thought I'd report back having just returned from Portmeirion.
We thought it was super, the food was magnificent, we did the 6 course taster on the final night (which ended up being 9 with amuse bouche and extras). Going to not eat for week now!
there was a Xmas market on over the weekend which was actually pretty good (i normally hate those things) but it was a lot of local made stuff (not just bought in chinese tat marked up for tourists). Also nice just strolling around the village noticing different features and touch didnt notice when you walk past something previously.
I will say what Wales lacks in vowels in makes up for in rain though

but would still recommend a short break there.