YOU SAID:
there were guests in 203
INTO JAPANESE
203人にゲストがいました
BACK INTO ENGLISH
203 had guests
INTO JAPANESE
203人のゲストがいた
BACK INTO ENGLISH
There were 203 guests
INTO JAPANESE
203人のゲストがいました
BACK INTO ENGLISH
There were 203 guests
That didn't even make that much sense in English.