You might want to try Airbnb.com. Did a quick search and saw a few places by the airport that you could get the whole house for less than $100 dollars. Also try Hostels.com - Great deals on hostels anywhere!. You will have to pay more for a private room and what not but it could still be cheaper than a hotel. But if you trips are together i would look at getting a room can keeping it. That way you do not have to deal with checking in and getting the key and what not.