This was meant to be a convenient overnight before a return trip through Keflavik. It may be only a few kilometers from the airport, but in Iceland, it costs $25-30 USD each way. Food at KEF is very limited. A 15 minute walk into town is forbidding when the weather turns - it was quite stormy when we were there.
A guest house is a different kind of accommodation than most in the US, a bit spare and utilitarian. We had the beds needed and a bathroom for our family room. We spent more time than planned in the kitchen area, as there was no common area with comfortable seating. Inexplicably, there was a jail cell at the end of the hall.
We paid for breakfast, which was a Nordic-style buffet. Communication about shuttles was confusing. The main business is around long-term car parking. Only return shuttle to KEF was available.
This stay could be a good fit for those that have a rental car and just need a bed for a night.