As of 3 days ago Health Infinity is at door 3 and Samitivej is at door 7/8. Samitivej is the one that is open 24 hours - and as I mentioned Health Infinity wasn't open in very early morning (and hadn't been open for a while since signs, posts, etc. were jammed into opening not just temp. closed. for a meal and no signs out to indicate hours. Probably opens later than I was there since someone mentioned it being opened at 8 am.
Also as I said they are a short walk from each other