TST is definitely more interesting (to me) than the Elements/West Kowloon area. I would call your Plat Concierge to see if you can book directly into a towers room. (I'm not familiar with Ambassador so I can't advise there)

I'm still dreaming about the sheng jian bao (pan fried soup buns) I had around the corner over there:
https://wongeatshongkong.wordpress.c...eung-hing-kee/
http://www.bbc.com/news/blogs-china-blog-35259633 (note the move to TST has been completed)