Accommodation

A lot of nice hotels are in downtown Reykjavik:

Hotel Reykjavik Grand:
https://www.islandshotel.is/hotels-in-iceland/hotel-reykjavik-grand/

Hotel Reykjavik Centrum:
https://www.islandshotel.is/hotels-in-iceland/hotel-reykjavik-centrum/

Center Hotels Arnarhvoll:
https://www.centerhotels.com/en/hotel-arnarhvoll-reykjavik

Center Hotels Plaza:
https://www.centerhotels.com/en/hotel-plaza-reykjavik

101 Hotel Reykjavik:
http://www.101hotel.is/

Radisson Blu 1919 Hotel, Reykjavik:
https://www.radissonhotels.com/en-us/hotels/radisson-blu-reykjavik-1919

And many more... just google it!