I find their efforts to recreate historical places at particular times mildly interesting, but I'm always going to prefer fantasy (and occasionally science fiction) architecture to what's possible in reality. And they certainly never managed to make the in-period narrative much more than cut rate stabby Forrest Gump.
At least through 3, which is as far as I've gotten. If the lore is really downhill from there, I may not end up sticking with the series. But we'll see.