Exegesis:

anagaion mega estrōmenon ‘a large furnished room upstairs.’

Translation:

Make ready, or, ‘make the/our (inclus.) meal ready.’

Quoted with permission from Reiling, J. and Swellengrebel, J.L. A Handbook on the Gospel of Luke. (UBS Handbook Series). New York: UBS, 1971. For this and other handbooks for translators see here . Make sure to also consult the Handbook on the Gospel of Mark for parallel or similar verses.