Hmm - I just ran a quick quote for 3 nights midweek in late November - its coming up with a 50% discount and is still over 300 euros

. Which is about £100 more for that time of year compared with the kind of price I'd be looking for on the likes of travelrepublic etc for the associated hotels.
eta - yep, just checked travelrepublic, same dates etc is £256 on there for the Explorers (and the Hi Park Serris is £140 lol).