How many coats of polyurethayne for hardwoods?

How many coats of poly for hardwoods in a rental? I’m thinking 3 or 4. Any insight will be appreciated.

I use two coats of the minwax poly and a top coat with the Varthane diamond strength oil base. I also warn the tenants to put felt under furniture and rubber undermats under the carpet rugs or they’ll pay for the damage.

3-4.

See what it looks like after 3. Each coat makes it look better.