Since a noun can be used as modifier of another noun (e.g. family in "good family house"), is it grammatically correct to use this week as modifier, or is only the genitive possible with this week?
If both are acceptable, is there any difference between this week report, and this week's report?
The reason I am asking is that in my native language, nouns are not used as modifiers; in Italian, the equivalent of family house is casa familiare, where familiare is an adjective. Sometimes, I get confused about whether I should use a modifier or another construct.