I know that there are other ways of wording it, but I want to know if this specific way is correct.
The use of the apostrophe in “week’s” is correct. It is an example of the possessive form, i.e. the meeting “belongs” to last week.
The French language has no possessive and and a French person would say “the meeting of last week”. If I’m not sure if something is in the possessive form or not I try to think of how it would have to be said as if there were no possessive, as in French. If it makes sense then it is the possessive form! Another example would be “my dog’s bone”. It makes sense to say “the bone of my dog” so the use of the apostrophe to denote the possessive is correct.
On Last Week Grammar
Weeks means many weeks
Week’s is possivie indicatiing the meeting belongs to the week – Yes week’s is correct.
i think it’s correct =D