What's the average tenancy length in nice Mid-City 3/2 duplexes?

[Jon Schwartz]

My wife and I are considering house-hacking in style by buying one of those big, 1920's duplexes west of Hancock Park and renting the other half. We're looking at side-by-side or up/down duplexes that are 1500-2000 square feet per side with 3 bedrooms and 2-3 bathrooms per side.

Does anybody on here own a duplex that fits this description? If so, how long does your average tenant stay? Because the buildings are nice and have 3/2 or 3/3 layouts, I'm guessing tenants stay longer than in 2/1s. What has been you experience?

Thanks so much!