It depends what you want to say.
'A beautiful summer dream' suggests that it's a dream that you had during the summer.
'A beautiful dream of summer' might be a dream about summer that you had at another time.
November 25, 2015
1
2
0
I think: "A beautiful summer's dream."
November 25, 2015
2
0
Still haven’t found your answers?
Write down your questions and let the native speakers help you!