We had an early morning flight out of Bangkok to the US and a late arrival flight from the US to Bangkok, so we booked a hotel close to the airport.
A Thai friend who works at the airport recommended Thong Ta Resort. We booked our reservations through Agoda, $25 (cheaper than if you book directly). The place is 5 minutes from the Suvarnaphumi Airport (5 min in the middle of the night and 5 minutes in the morning). We were met at the meeting point for international arrivals with a hotel representative and whisked away in their van. Very clean rooms, tv, fridge, ac, quiet enough for being 5 minutes from the airport, good free breakfast, and another free shuttle back to the airport. The place has a restaurant, but if you want to explore for variety, there are a number of small decent restaurants in the neighborhood.
I'd buy stock in the place if they were selling it.
thongtamail@gmail.com for transportation requests from the airport, and you can ask for a room with a full tub / double bed or two twins for no extra charge.







