It's a numbers game and the Buyers/Sellers really tend to just care about nets and areas/margins on a longer-term, which I'm good at analyzing backing up. 

Old houses with stone foundations tend to always have some kind of moisture problems.

I'm a plumber hvac guy by trade,  do a lot of my own work and  tend to spend a little more on rehab/mechanicals up front, right down to the kitchen sink drain, but get almost no calls for repairs.

They tend to have good rates but are shorter term as well. 

I am definitely not an expert on this particular subject, but I watch a lot of YouTube videos and listen to a lot of Podcasts, and anyone I have ever listened to tends to believe that quality photos do get them better renters.

Multiplex properties - as far as I can tell - tend to be in "bad" neighborhoods or lower income areas.

It tends to make potential buyers uneasy when tenants are unwilling to cooperate, and I've found that simply being up front with them almost guarantees smooth communication and cooperation between all parties.

The du/tri/quadplexes are rare, and they tend to be in rough neighborhoods with unreliable tenants.

Several of my colleagues feel it is a waste to do so, considering the comps speak for themselves on the ARV and we have the contractor bid for repairs; but I tend to disagree.

Welcome to Anywhereville, USA.Yes, lower priced housing tends to be in the not so nice areas, but that's not always the case.