Part of the confusion is that both the "Corner Suite" and the "Astoria Suite" are in the corners

Corner suites are normally in the range 11-14k THB, are 90 square meters, and are only on floors 6-7.



I believe in the past you booked the Corner Suite, and you got upgraded to an Astoria Suite which is why you think it looks similar - I suspect you never stayed in a corner suite. The Astoria suites are also in the corner but are much bigger at 140 sq meters and normally in the neighborhood of 20k THB per night. On floors 8-11 the plan is like this one.



On floors 12-14 the Astoria Suite xx16 is similar to those on floors 8-11. However on the "city" side (xx18) the suites are even bigger according to the plan = these are the 2-bedroom suites.

And on floor 15 it's one giant room taking both sides = the Royal Suite.

So technically in my opinion the best one-bedroom Astoria suite is 1416 - the highest floor for such room type and on the sports club side. The worst Astoria suite is 818 - the lowest floor for this room type and on the city side. However 818 is still better than the Corner Suites below 618 and 718 which are not only on lower floors but also smaller.