There's not many other more convenient options In my opinion that protect your tenants if a key is stolen.

why should I per that much rent to be in this place where I see needless left right and center, tons of homeless ppl and have my bike stolen twice a year, plus some vandalism?

LEDs would be great, but still pricy and might get stolen?

Other than lost rent, you have to consider the expenses (water, sewer, insurance etc) for those two months, as well as the higher risk of break-ins, vandalism, getting your HVAS unit stolen for the copper in it - however small that risk may be in that neighborhood, it is still there.

Also, since the scope of work was very general, i figured there is a high probability that i will require similar things in the future, so i did not feel bad for spending money on these items.EDIT:I think i should also mention that a few years ago my car got stolen and recovered.

What if something is stolen? 

The tenant gardener took the tomatoes out of her rent check and the deduction was called "stolen property".

All tenants with bad credit are working on repairing them or had their identity stolen - rather I look for the pattern of behaviour.  

Please have all valuables in a secure place as "My company" will not be help responsible for lost or stolen items"So they don't have the ability after requesting maintenance to tell us no you can't come in here.

Shawn Sonny I once lost a 1 year old refrigerator stolen the same way.