Yes, it is a Banyan Tree but the overall experience is not quite as expected. The staff are very good and helpful but the property is showing signs of age and could do with a makeover. As others have mentioned, the breakfast restaurant can get overcrowded despite valiant efforts from the restaurant staff, especially as the hotel gets plenty of tour groups who all descend for breakfast around the same time prior to leaving. The rooms are OK but showing their age - the one we were in this time had a very small bath, the tiles in the bathroom needed regrouting and the TVs were small and old-style, not flat screen.
It's the details that let the place down: for example the small pool area has about 18 sun beds and as it is rainy season in Bangkok currently it rains pretty well daily and usually late afternoon/evening. You would imagine that they would cover the sun bed mattresses or remove them, but no. Next morning you are expected to sit on a saturated mattress and when we removed the sodden mattresses to sit on the bare sun bed, the mildew on of the mattress undersides showed that they are never removed. Also, wifi in your room will cost you 16 baht per MINUTE. This is scandalous in a day and age where Internet access is a given. If guests want to sit in reception to work, they are given 2 hours per day complimentary public area wifi access. It is just not good enough.
The prevalence of transient tour groups may be indicative that this Banyan Tree is chasing a different market, given the plethora of 5* hotels in Bangkok these days. We will be back there soon (pre-booked arrangements) for what may well be our final visit. Unfortunately, this Banyan Tree does not warrant premium prices.