I am the sole owner of a studio apartment that I would like to give to my daughter, retaining the usufruct. I am married. When I die, will my husband benefit from the usufruct of this property?

No. In principle, usufruct ends with the death of the usufructuary (art. 617 C. civ.).
However, if the donor retains the usufruct of the donated property, it is possible to include a "reversion of usufruct" clause in the deed of donation. In this way, on the donor's death, the usufruct will pass to the person designated in the clause (spouse, partner, cohabitee, descendant, etc.