They have free shuttle service to/from the airport at exit 5 at the arrival level of the airport. Friendly staff to bring your luggage to the mini-van that is waiting right there. Within 10min you are at the hotel! The hotel is located located along the main road between route 7 and the Bangna-Trad route and in between ware-houses markets and just Thai suburb life.
The hotel has a nice lobby lounge and a 24h/day open restaurant, free Wifi (but not so good), free parking and even an nice swimming pool. Our room had separate shower and bathtub with a view, but some other rooms have shower only. The rooms are comfortable and there is choice of smoking or non-smoking rooms. And behind the building is a nice swimming pool. See Amaranthhotel BKK