We stayed at the Center Hotels Arnarhvoll for 3 nights. The location was excellent and we loved the views from the hotel, particularly from the Sky lounge on the top floor, where breakfast was served and where you can get drinks in the evenings. The hotel was good value. And the staff at the front desk were excellent -- super helpful. However, we found our room to be inconveniently small (you had to squeeze by the corner of the bed just to get around it) and the mattress was not that great. If you have no back issues, and you avoid the smallest room, I would definitely recommend it.