Ryanair seems to use Octopus Travel - is that the same as CNG Hotels? It's worth checking various affiliate sites, because I've checked RyanairHotels and then other Octopus Travel affiliates, and I found the Ryanair price was cheapest. I wouldn't be surprised if Ryanair has some sort of Walmart-style agreement giving Ryanair the lowest price or something. Although I've also seen the Ryanair price being exactly the same as other Octopus Travel sites too.