A remodel in nearly all cases would be classified as a capital improvement - extending the life of the asset, your home, rather than repairing or restoring a broken asset to serviceable condition such as a broken exhaust fan or leaky faucet.
The bathroom remodel should correctly be depreciated over 27.5 years for rental property located in the US (40 years for property outside of the US).
Last year's return has a depreciation deduction that is incorrect and your return needs to be amended to correct the error.
This may result in a tax balance due unless your rental losses are not deductible due to passive loss income phase out.