If you're really building an in-depth list, get back to me again and I'll update you on their(Isbell) performance.

I like using the MLS better than Redfin personally in my market so I can see more agent's notes and comments, have access to showing info, get more in-depth info on properties than what Redfin shows, see upcoming listings before they're listed, set more granular search parameters, pull comps/create CMA's more easily and accurately, view info on past listings, see archived photos, access documents, schedule showings, etc. 

They will dig down around your footer or slab to see if it is the correct thickness or depth to support the 2nd floor. 

You will need to go far more in depth if you decide to move forward.

Either way, I would talk to vacation property managers in both places and really get in depth info as much as possible and then weigh it from there. 

She is trying to use her occupation to manipulate you.

Many of us including myself write about our niche and strategy more in depth on our website.

This is usually a great source of more in-depth information on their "tricks to their niche:without the badInformation is free- Other than a membership which helps the site, their is no "cost" to participateNo pressure- Everyone helps each other succeed but no one pressures you to buy something for their gainNo sales- Unless you are in the market placeAgain Welcome!

Inform them that you were out of your depth and have sincedone some research.

In my case, I've posted my views that the best in-depth resources are local community colleges and/or law classes geared specifically to your state statute.