Are there other platforms like 2nd Address that cater specifically to furnished 30+?

I also work for NestEgg a property management platform that specializes in helping busy landlords with their maintenance issues. 

;) Thanks to pitching in, and BP for the platform that enables such an exchange! 

My basic format includes the following:Executive Summary (written last) with property info, deal points, and investment summaryProperty information - location, physical details, amenities, photosFinancial/investment information - competitive properties & their performance, comparable sales, operating projections, sources & uses of funds, cash flow projectionMarket and sub-market information - demographic information, demand drivers, existing & new supply, area amenitiesSponsor information - summary about your platform or investment strategy, short bios on the principals, existing portfolio, case studies / track record (if brief - may be delivered separately)

I subscribe to both, but we (the CRE community) need to push / help promote other platforms to keep the CRE search / research platforms competitive.  

Maybe you can use that platform?    

Search engine optimization on the platform.

In the past I've just had my tenants send me money via Venmo, but I'm developing a need for a more professional platform.

Brokers have the MLS and other platforms, contracts, disclosures, risk mitigation, some convenience to the seller. 

BiggerPockets will be a great platform for you to take your journey to the next level.I highly recommend completing your BP profile to let people know where you are and what you plan on doing.Get specific with your goals, i.e.