A key and feasible amenity that seems to be missing from older properties are package lockers.There are a host of vendors out there and Amazon even has their own proprietary system. 

The price is good though, I'm wondering if it would make sense to buy and turn into a duplex, or even 3 studios? 

I've written a book on Amazon entitled "The Essential Handbook for Landlords".

The rent is the rent.. period.I would however compensate them for the hassle....gift card to dinner, movie, amazon...whatever.How much depends on how big of a hassle they went through and how long.

I wrote a book - The Essential Handbook for Landlords - on Amazon which is a great starting point.You own it - you're in charge.

Purchase price: $720,000 Cash invested: $144,000 Purchased a portfolio that consisted of one 3/3, one 3/2, two 1/1, one studio.

Tyler Perry studios.

If we all had 20/20 foresight, we’d just buy Apple or amazon or Microsoft or google stock with 50-100% annual returns sometimes and live our normal lives while our investments exploded in value.

At max rent, the studio rents for $500, the 1 bedroom rents for $800, the three-bedroom rents for $1100, and the garage is rented for $300 per month.

That's like asking how much higher can Amazon go up in price?