I'm thinking of joining A+ and would like to know if it is worth it for me:

1) i'm ONLY thinking of this because Swissotel is now part of Accor. And I stay at Swissotel in Singapore for 2 weeks / year.
2) I have no interest in other hotels or 'magical destinations' or other perks.
3) I still see 'up to 20%/25%' or 'free night' promotions on the Swissotel web site for their hotels (Would A+ offer better than this?)
4) The Stay Plus benefit: What happens if I bundle this with a normal stay (i.e.: Use 2 days of Stay Plus + 8 days of normal paid stay in a high-tier room) (Would I have to switch rooms, would I be able to upgrade the 'standard' to the better room (at a reasonable rate), would I get my normal benefits for the 2 stay plus days (internet, etc?)

As it stands: If the Stay Plus benefit is not willy-nilly free to use as pleased with normal perks, i'm unsure if this is worth the money?

Thank you.