For illustration purposes, here's a fresh example that was brought to me: 95% seller financed  for 3 years I/O at 6% for a 30 door hotel.

I have only 3 doors now but I'm getting more soon.Some one mentioned REI Hub so I'm looking for some user reviews and other suggestions that you may have experience with.I downloaded the free 30 day trial of REI Hub but I think it will take more time to set up than the help it will provide.

It’s not ADA accesible but the showers are walk in and there is a ramp to the front doors and off the back porch.It’s a great location in Colorado Springs. 

I was quoted $800 by a property manager years ago to replace a $150 garage door opener.  

If you see a lock box on the door to your rental (when you live downstairs), why wouldn't you call the tenant and question them?

no where near enough information for what you plan to do or where you are even at.

Have they mentioned what they might do or join in the future? 

This will enable them to manage a PM when they reach that level of doors.

I would close off the entrance except for your Italian restaurant, designated parking or valet. 

To answer your question, I am a passive investor and probably will stick to the doors I have until the opportunity presents itself (probably won't happen since I'm very casually looking for it.)As far as 1st lien HELOC and investing goes,  it seems advantageous to me to have the option to reinvest from the LOC if the opportunity falls on my lap as opposed to having debt/equity tied into a conventional loan.