Just bought a second new fridge for a tenant.

I learned to installl cameras in the common area like the fridge.

moving the fridge and oven for cleaning - uncommonscreens, holes, rotting porch, messy porch - PM should handle these and bill youBased on your ability to get stuff done, your standards, and their service level, self-management seems like the right answer.

I look for moisture around radiators/baseboards, bathroom fans, GFCI outlets, window guards, fridge door seals not cracked (tenants will never report this, your electric bill will), under-sink P-traps for slow drips.

I want to run a hypothetical by you (and anyone else who wants to chime in):  Let’s say I buy the duplex, live in the vacant unit, and do a light upgrade on the tenant-occupied side (replace the upstairs carpet with LVP and swap the stove/fridge for stainless).

If there is no way around this then I would suggest a little bit of a price break compared to rents, offer some luxuries (I.e. fridge/w/d with the unit if this is possible).

What if the tenant is using common areas to store personal stuff and pluggins appliances like mini fridges? 

Cockroaches love dishwashers and behind / under the fridge.

  $400 for cleaning (I'm in Canada) would be a deep cleaning and should mean everything is cleaned (ie oven, behind appliances that are easily moved-fridge, stove).For $3500, they need to provide you with an itemized invoice. 

I forgot to add that I include info and a QR code for my house on Houfy in my guidebook, and I had a custom magnet made up on Etsy with the QR code for the fridge so guests can't miss it.