John Gill Commentary Nehemiah 13:5

"had prepared for him a great chamber, where aforetime they laid the meal-offerings, the frankincense, and the vessels, and the tithes of the grain, the new wine, and the oil, which were given by commandment to the Levites, and the singers, and the porters; and the heave-offerings for the priests." — Nehemiah 13:5 (ASV)

And he had prepared for him a great chamber
In the temple, by throwing together several chambers, as Piscator observes:

where formerly they laid the meat offerings, the frankincense, and
the vessels, and the tithes of the corn, the new wine, and the oil,
which was commanded to be given to the Levites, and to the singers,
and the porters, and the offerings of the priests ;
see (Nehemiah 10:37–39) (12:44) .