Please tell me whether right or wrong
Whether this is correct depends on what kind of hall this is.
If it's a lecture hall, with a specified number of chairs for people to sit in, then place is fine (although room works, too). If it's a hall in somebody's house, where there aren't predefined spots for things (i.e. places) then room is the correct word.
I'm an American English speaker, but I suspect this answer is the same in British English.