We stayed at the Amari Atrium for 5 nights on our second visit to Bangkok.
You are greeted politely by the ever-helpful concierge and directed through the front doors and into a very airy and understated lobby -- unusual for a Thai hotel. The airiness is due to a five-story atrium directly above your head -- each level overflowing with flowers. As you sign the register and informed of your room number you cannot help yourself looking up. I think the reception staff are quite used to talking to people's necks! The atrium is not the only attraction here -- as this hotel is further out of town than many, the view from your room is better as there is less air pollution.
The rooms are very well appointed and if you have a corner room as we did, your view is a massive 90 degree plus!
The Atrium also knows how to keep you well fed, as it has the largest buffet breakfast we had ever seen -- there was even a cook on hand to ensure your eggs were cooked to the way you like them!
As the Atrium is a little way out of town; the quickest and cheapest way back into the city is via the canal (klong), which runs behind the hotel. For just a few Baht, the ferry will pick you up and deliver you to anywhere in the city. Be aware though that is not like any ferry you have ever been on before - the ferry is a bit like an oversized longtail boat with a tarpaulin over the roof. Three men stand on the outside of the tarp one to drive and the other two to spot passengers waiting on the landing areas. Warning: the ferry does not stop if there are just a few passengers; it merely slows down so you are able to jump aboard! Non-slip footwear is strongly recommended. The reason for the tarp over becomes very apparent once the boat gains speed and the splash from the bow and from other boats starts to increase. The canals are dirty and very smelly and the tarps ensure a clean and pleasant journey. I thoroughly recommend the Amari Atrium whenever you stay in Bangkok.