Iceland has done quite badly,
I think Iceland has done pretty good, considering very high (almost 20x NZ cases on a population basis) and low average age of cases (thus high probability of infectious mild or near asymptomatic cases). Then also with small population they have fewer resources.
It was the fact that they got to almost 20x NZ cases per capita that I considered bad. But I think the disease arrived there quite early, so less was known about how to stop it. Certainly their response in avoiding deaths was good.
Maybe countries in the northern latitudes do better at controlling covid-19 because they're already used to and accepting of being housebound for at least days at a time during winter storms. So, relatively speaking, a lockdown for covid-19 (even if it is springtime) is less strange than in more temperate climes.