We walked from our hotel at the harbour and enjoyed a couple of hours in the museum. It's modern and nicely set out, and has well labelled exhibits in English, although we preferred the Skogar folk museum as it has more character, but Skogar is a car journey from Reykjavik. You can hang your many layers of coats up in the cloakroom/locker room downstairs or put bigger bags in one of the free lockers...keys are in the doors ready. It's a little way to walk but not too far and staff are friendly. Enjoyed the silvercraft exhibition very much. Not too overwhelming a place to visit for a couple of hours.