But follow and find when the city approves mid/higher-end mixed use commercial builds in otherwise undesirable neighborhoods!

How much time, energy, fuel/mileage (this is huge if you live in city with bad traffic/commutes and the property isn't nearby), resources are you going to spend to try to get an undesireable property to sell quickly?

Do people have any experience renting out several rooms in the same place to traveling nurses/professionals and find out that it is undesirable? 

I'll be the stick in the mud and say it's going to be a lot more rare with the current state of things, at least in the short term:1.

I recently found a company in Washington state that sells drywall tape that is already textured (you can buy it smooth as well) that cannot be punctured - so it can be used instead of patching with drywall and mud - and look invisible when paint is applied over it. 

Or do you do the undesirable things yourself?

These are undesirable tenants!!!

There are alternatives in many locations such as creating MUDs and PIDs, but not all developers may be able to do that or want to do that.

Cash flow isn't much for any house above 250k but no doubt appreciation will be good after 15 years especially many big tech are moving their HQ here.One thing you should watch out for is property tax (asset value get reset every year) most new build in these area are higher than those houses in an older community because of one thing call MUD in TX which provide water, sewer and drainage, plus most house in the suburbs area of Austin are build in a HUD which all has HOA fees range from $20-$100 / mo.

Cash flow isn't much for any house above 250k but no doubt appreciation will be good after 15 years especially many big tech are moving their HQ here.One thing you should watch out for is property tax (asset value get reset every year) most new build in these area are higher than those houses in an older community because of one thing call MUD in TX which provide water, sewer and drainage, plus most house in the suburbs area of Austin are build in a HUD which all has HOA fees range from $20-$100 / mo.