Stopped by Isaia sale this morning. Very weak on accessories (hardly any ties, belts, pocket squares or shoes), but tailored clothing seemed to have a pretty good selection. If you are a 38 there's a good selection of suits and sports coats - lots of flannel suits with really nice chalk stripes and window panes. Seemed like, as usual there was no shortage of stuff in 40-42 US as well though I didnt browse as much on that end. Also, if this is your thing, I noticed at least on Casentino overcoat in 40 I think.
decent amount of shirts especially at EU 40 and 41, though a few in EU 38 and 39. smallish selection of knitwear that seemed mostly M-XL.
If you are a 36 US, there was one suit hidden in the 38s. Solid brown 2 button single breasted, 95% wool, 5% lycra. It was on the rack all the way to the left about 4 or 5 back.