My wife and I just got back from a week and a half in Iceland. I booked with Affordable Campers after looking at six other companies. The rates were about 250 Euro. less than any others. Service was good as we were picked up at our guesthouse and taken to the van. the van was small, but designed to have a big bed. I am well over 200 pounds and there was a lot of room for my wife and I to sleep. The van was simply appointed - not a lot of extras - but had the basics. A small butane stove to cook with, a cooler, and all the necessary kitchen utensils.
Mechanically, it ran well and was quite reliable. It took us to everywhere we wanted go on paved and unpaved roads ( we did the entire Ring Road.)
The owners were very pleasant and gave us all sorts of advice on how do do Iceland affordably. They even drove to wherever we wanted in Reykjavik after we dropped the van off.
I would highly recommend this company as they were hassle-free and handshake -friendly.