I strongly recommend people to stay elsewhere.
On my way to Palau, I have overnight layover in Guam and I have stayed at Guam Reef. For almost 300usd per night, this place is dated and customer service is horrible.
After I check out at 12 pm, I have a few hours to kill before my flight out. I asked whether I could sit by the swimming pool for a few hours but the management rudely told me no. I have stayed at many hotels around the world and it was the first time that I encountered this.
Add to that unpleasant experience, other than a dated basic room, the hotel does not offering much. Whereas Pacific Island Club down the road offers free kayak and SUP board offered. And there is no free airport pick shuttle. Note that a short taxi ride from the airport costs almost 30 dollars.
So on my way back from Palau, I stayed at the Pacific Island Club, the staff were very nice and accommodating. They let me use their kayak and SUP after I checked out.