In Iceland my preference was the Hotel SAS1919 which is centrally located and close to the domestic airport where the flight to Greenland departs. There are a number of other options available at varying prices depending on location to the center of Reyjkavik. Hotel costs in Iceland are not included in the package.
In Greenland we stay in the hotel Kulusuk which is a new hotel with good facilities close to the Kulusuk Airport. The dining room has an amazing outlook over the sea ice toward the mountains.
It is 30 minutes walk into the small Kulusuk fishing village. Kulusuk is one of the last hunter gatherer communities left in Greenland and the village is an interesting place to visit.