the property wasn't rental property in 2020 since you took no action to get tenants. you get no deductions on schedule E. you can deduct taxes and mortgage interest on schedule E.
just a warning for 2021, based on the info you have provided. personal use days are greater than 14 days and days rented will be for more than 14 days. the unit is treated as a dwelling unit used as a home. expenses must be prorated between rental and personal use (so for 2020 100% of expenses are personal - no rental datys). rental portion of interest, taxes and casualty and theft losses are not limited to rental income. other rental expenses (including depreciation) are limited to remaining income. carryovers are allowed.
