besides main building there is also an annex
some premier and grand in annex (floor to ceiling window)
at least part of spa in annex (including spa house terraces)
and a few residences are on top floors of annex (16,17,18)

seems 0 fully separated suites, for those who require/prefer.
corner & aman same: "Corner views of Fifth Avenue and 57th Street"
and their hotel website room pages both use the same photo
photo is same layout as photo in brochure i posted below

alternative >
Fifth Avenue Junior Suites (entry)
can connect to
(6) Fifth Avenue Suites (below grand)
premier sanctuary does not list connecting
premier 57th street is not described but is listed in factsheet

handling access to property sounds like it needs improvement, but again some will pay for 'guest-only' including me. remains to be seen what they do in future in terms of dining/spa. i would pay a premium for aman NYC if i had to be in NYC. i would have paid more of a premium if it had even fewer rooms.

the penthouse has not closed yet. also none of the 3 units on 16th floor, makes me wonder if a single buyer bought all 3. 13 closed, 9 left.

re NYC likely lowell and perhaps mark are still good but neither have pool, spa, outdoor.

re dining table and 2 chairs, personally that seems like a much better option than desk, 1 chair, etc. more flexible use than 1 chaise/etc.