Þingholt by Center Hotels was a very comfortable hotel. Our room was a little bit tight, but the bed was very comfortable, our bathroom actually had a tub/shower combo which prevented the wet floors we had in some other hotels on our trip, and they provided a fan to keep the room a little cooler. The staff was very friendly, the breakfast was good, and we took advantage of happy hour with some lower priced drinks (which comes in handy in Iceland 😉)