The sentence 'marvellous time' is correct and usable in written English.
For example, one could write, "We had a marvellous time at the beach yesterday."
"I had a marvellous time.
I expect to have a marvellous time.
"I've had such a marvellous time tonight.
Bud somehow had himself a marvellous time, even with the bruja's blue eye fixed on him.
"It was the most marvellous time — we felt we could remake the world," Pierre Troisgros recalls.
I am having a marvellous time in America and have just written my first short story.
iPhone / iPad Stick Cricket 2 (Free + IAP) The original Stick Cricket game remains a marvellous time-sucker, and while not all App Store reviewers love this sequel, there's plenty to enjoy.
Though they have nothing to show for their years of wandering, they still feel that there are marvellous times ahead.
I've had a marvellous old time, and also I've felt tired and sad at myself for some weeks afterwards.
"I think you're marvellous on Question Time," she would purr about some programme she had remembered from months earlier.
It was marvellous and, at times, slightly uncanny.
