Kababayan,
For those who are really in a tight budget and is looking for an accommodation at least for themselves, basically this is for those "tulog lang talaga", I suggest google for BACKPACKERS. Cheapest would be 15 dollars per day depending on state or region. It is just a "tulugan" then common t&b etc. You will be sharing at most 10 or more in one room. These are legit and some travellers prefer this set up.
Some of my friends tried these backpackers as they travel around Australia beauty of it they gained friends whilst enjoying playing snooker and of course the bar is always open for drinks.
Not recommended for kids.
Another way is, rent a room farther from CBD you will be surprised how cheap those room rentals could be ehem.. less than 100 dollars.