Have not been, but Avillez is a very talented chef, so it should be... Pity he abandonned Tavares as and when he did, I think it was too hard for him!
On the other hand, have been recently to the Feitoria, the restaurant of the Hotel Altis Belem where chef Jos'e Cordeiro got himself a Michelin rosette. Nice place and great food! Suggest you try it,