HotelQuickly is offering $30 off your first booking. I discovered this while posting this comp. This is $5 more than the previous deal posted last week. This also has a long expiry of January 1, 2016.
Hotel Quickly, according to Wikipedia:
is a free mobile app for iPhones, Android phones, and BlackBerry 10 devices. It offers deeply discounted last-minute hotel rooms in more than 190 destinations across 15 countries in Asia Pacific. HotelQuickly is a private sales channel and offers rooms only for the same day and one day ahead of checking in, which is the reason why hotels are willing to grant discounted rates to members of HotelQuickly. On average, prices on HotelQuickly are about one third lower than the cheapest price for the same room online. Hotels use HotelQuickly to sell their distressed inventory as part of their yield management.
Always compare with sites such as HotelsCombined or check with the Travel Wiki for other options/tips.
Cheers mate, just checked it out and some awesome rates on offer (Melbourne).
Although it is last minute bookings, I'm sure this will come in handy for those days out where you just want to kick on :)