I asked myself the same question, but all I could find find was the post of 2020, which seems to indicate that it might be a renovated property..

https://teawlataem.com/2020/07/15/ne...-sukhumvit-22/

"Four Points By Sheraton Sukhumvit 22

เหมือนเอาตึกเก่ามารีโนเวท ทำเป็นโรงแรมใหม่ นะครับ

โรงแรม 7 ชั้น 74 ห้อง + 17 ชั้น 259 ห้อง"

Google translation:

It's like taking an old building and renovating it. Make it a new hotel.

Hotel 7 floors 74 rooms + 17 floors 259 rooms

The first time, that I heard about the hotel, was on a YouTube video from a real estate agent (in French & English). The guy in the suit indicated that the Four Points in construction would be with serviced apartments. I have not seen any evidence of this.

He starts talking about the Four Points after 23:29 minutes.