They have regular basement stairs going down, and there is even a dumbwaiter going up from the basement so I assume they were going to put the kitchen in the basement.

All rents are due on the first, and deemed "late" at 5 PM on the fifth calendar day, except if this falls on Sat, Sun, or Holiday, they get until the next regular Business Day, when late charge is applied.

I am not sure if the regular mail is valid form of delivering 3 day notice. 

The appliances are approaching their lifespan and require regular attention.

Hiring people who only work after the regular work day eliminates professionals and allows a max of ~4hr per day to complete tasks, meaning 50% of a work day maximum (or 2x as long).

There are many options, just make sure they are designed with routine condenser maintenance in mind. 

You can also post under "general" if you've got a house for rent and it will also show up in the regular posting. 

Somewhere that I want to vacation regularly or retire to that has "short-term rental" friendly laws.

For the 3 triplex I own in San Diego, I only have regular home insurance.

If someone wants $ upfront or rates are equal to or better than regular rates (4-6%) then it’s a scam