Following on from my question on last minute accommodation deals in Australia, I ended up booking something about 20 minutes before boarding my flight, which didn't leave a lot of time for research... I spotted a nice sounding 4* place on an opaque hotel booking site for not much more than a shared room in a hostel! The hotel offered a pool and spa, which sounded tempting after 24 hours flying, so I opted for that. The only snag was discovering that they wanted 1/3 of the nightly rate for wifi! Luckily the cafe next door has free wifi, and does very nice coffee :)
Opaque hotel booking sites (also known as "hidden hotels", "secret hotels" etc) can be great, because you can get some stunningly good deals as hotels shift excess rooms (some money is better than no money for an empty room!). However, to avoid undercutting the main hotel's booking, they don't tell you what hotel you'll be booking, just the area it's in (can be very big!), and some headline facilities of the hotel.
Is there any way when booking through an opaque booking site to increase your chances of getting somewhere with free wifi? Or at least cheap wifi? Or is this just a risk you take when using opaque sites (such as the rates almost never including breakfast)?