I don't know which are best but you can bet if it supplies too little the tenants will change them for ones that flow more.

If you are tearing down the plaster/drywall/paneling on the walls and exposing the studs and the plumbing is old (not copper for the supply pipes or PVC/ABS for the sewer pipes) I would update the piping.

For those STR operators and investors that are not comfortable self managing (communication with tenants, scheduling cleaners and organizing supplies) one option is to hire a designated full/part time employee. 

@Vanessa SwitzlerHuntsville is going through a correction right now, with supply outpacing demand.

YTD New Listings: 14,091, +4.17% Yoy.Months Supply: 1.4, +16.67% Yoy.Cumulative Days on Market: 43, -13.33% Yoy.

you don't need off market land. most land is listed is fine. it's a buyer's market for land in most markets which means more than a 6 month supply. practice underwriting the deals and making offers, find deals they may do owner financing, etc on. 

Low supply leads to rising prices.  

However, multi-family deals seem to be expensive, overdeveloped and in short supply on the MLS. 

Two of my guys, a container full of tools, supplies and materials, a tent to sleep in.

You cant compare between the two.The truth is residential is good location and has more demand than supply always appreciate over ten years.