I have no experience with this group but just visited their website. 

Difficult to tell from the website exactly what type of Passive Investments are available: Fixed Term or Open-Ended.

Do you know of any websites or platforms where I could go to analyze and practice seller finance and creative finance deals?

Having reasonable expectations, hiring a local professional (Realtor or PM), doing your research, and doing everything right (i.e. pro photos, professional design, good renovation, proper amenities and location, etc) are the keys to success in 2025.

Investing in features like high-end appliances and modern designs yielded a higher ROI.

Adding and making better could sell or rent faster, but it won't get you more than what the market ARV and rent is set at from other similar comps in the area....and your Interior Design background will help, if you you it mostly as an understanding of cost. 

Both of those websites charge the tenants more than $25 and we require all adults living in our units to pay and fill out an application. 

Several factors indicate the company is not that concerned about efficiency or ease of customer process: the website, a process that seemed to focus on one issue at a time instead of all issues at once, and consistently poor communications and lack of common sense from the loan analyst we were assigned.It started off very well with the initial point of contact, Austin Lornson, who did a fine job of explaining the general refinancing process, responding quickly and thoroughly to our questions.

Investing in features like high-end appliances and modern designs yielded a higher ROI.

We have our own design team, contractors, and real estate agency under one roof, which saves time, cuts costs, and improves communication across projects.