I have asked the agent several times and the answer I get is "They went with another offer" , and that property gets forgotten and we move on. 

It's probably some forgotten trash or something.

I've forgotten already in this thread what you are asking her for, but to arrange a showing she has to figure out access. 

6) Is there anything else I need to know, or any questions I've forgotten?

Marco:- Heath Sector is one of the major employers → increased aging population/more job growth - Bioteh, fuel cell research & tech sectors all growing → forbes speculates could be next tech hub- Opportunity Corridor (projected to complete in summer 2022) → revitalize the "forgotten triangle"- Large businesses coming in & staying → Plug & Play (start up accelerator funding company), Link 59 (62,000 square foot complex), Sherwin Williams, NASAMicro- Great PTR ratio → Great cashflow- Strong renter's markets → over 50% renter occupied- Barrier to entry is low → scalable- BRRRRableNeighborhoods (highest appreciation rates)Detroit Ave / W 25th StW 25th St / Walton AveW 6th St / Literary RdRoute 422 / Broadway AveW 7th St / Marquardt AveCastle Ave / Scranton RdDetroit Ave / U.S.

What's the most forgotten thing that new hosts tend to look past that makes a large difference in a persons stay?

For any mortgage product, there's a third component that's being forgotten and that's "time component".

I had forgotten about that but I don't know if they have it for Houston.

Many are located in cool old neighborhoods with forgotten charm.  

I had forgotten where I'd seen it.