Cold calling is already such a poor-performing strategy. the ONE thing good about cold calling is that you are talking to a HUMAN, building rapport, and asking and answering questions.Now that ONE good thing about it is taken away...Like David above me, no experience, and it would indeed be interesting to see how it does, but that doesn't take away from what I mentioned above.

I own units with no kitchen window and have had tenants mention that it just feels weird. 2.

The challenges experienced in the cases mentioned above and elsewhere would be non-existent.

i have looked into the Landlord locks as mentioned but have not used them. i have one student rental where i use an electronic lock ( that i can control from anywhere, change codes etc.), but the bedrooms are regular keys, as @Jonathan C. mentioned for the front door, the unit is set up to send me an email when the batteries are low. i also have another student rental ( 8 rooms, 2 entry, 2 units + utility room) one master key and each bedroom has its own key that will get students in the entry, there unit, and there own bedroom. had a locksmith do that one. cost me a few hundred dollars with keying and supplying the locks ( 13 total ). i like both setups but may look into the landlord locks again for my 3rd student rental i just purchased.

He has repeated the process in which you mentioned with success.

Sorry, we should've mentioned that to you guys." 

Nothing you mention is "ordinary" and you should charge for all of it.

As mentioned above contact a tax planning specialist.  

We don’t know any PMCs to recommend in the area mentioned, but since selecting the wrong PMC is usually more harmful than selecting a bad tenant, you might want to read our series about “How to Screen a PMC Better than a Tenant”:https://www.biggerpockets.com/member-blogs/3094/91877-how-to-screen-a-pmc-better-than-a-tenant-part-1-services-and-processesWe recommend you get management contracts from several PMCs and compare the services they cover and, more importantly, what they each DO NOT cover.

@Keetaek Hong I have a lot of clients who are facing the same challenges but they understand the long game and that it's imperative to build a portfolio, With that lowered interest rate I mentioned you are looking at 30% down and including PM fees will typically have you around break even or barely positively cash flowing.