This year , no.
Under the old rules (before 2018):
Generally speaking (there are exceptions), if you were too far away from home to drive back and forth each day (I assume you were, since he paid for a hotel) and for long enough to need to sleep (again, I assume you were, because he paid for a hotel), but less than a year, then you can deduct your choice of either half of the cost of meals or the federal government's "meals and incidental expenses" (M&IE) rate.
You cannot deduct the full cost (although I've sometimes been able to deduct more than the full cost, when I used the M&IE rate and it was more than twice my actual cost).
If you worked in the same place for over a year, then you cannot deduct meals (but you may be able to deduct moving expenses).