Boon Bundan guesthouse is run by a Christian Thai family, bibles are complimentary in every room, late night 'guests' tolerated none the less. It's located in a Soi off YedRod rd., near the Chinese temple.
It is the best deal in budget accomodation, prices have just gone up , starting from 170bt for a fan room with cold water, the top bracket is 450bt for aircon, hot water, TV and mini-fridge.
I opted for the 200bt room with solar-powered hot water:
There even is a phone to order drinks from reception.
It's not spotless, but acceptable for the price.
The bathrooms have Western style toilets: