I wouldn't recommend it for a number of reasons. 

I wouldn’t personally recommend it, as office vacancy rates are currently quite high.

Left me feeling like a basically have a retail/fulfillment person on my team so I'm a big fan and would recommend giving them a shot, especially if you're in a similar position as I was: Needing to furnish an STR quickly and cost-efficiently. 

I would maybe recommend reaching out to another CPA or two to get an idea of the cost in your area and with your situation to see if you're overpaying.

If you want to get into MTR or STR I have better markets to recommend.

At the current scenario, without knowing anything about you or your properties I will recommend either to look at a loan from your assets using DSCR loan.

I’d also recommend @Whitney Sewell's podcast The Real Estate Syndication Show, and other resources like the Joe Fairless podcast.

Or are there other methods you’d recommend that could align better with my goals?

I would recommend anyone that gets started has at least a list of 10,000 to ensure they can get 1-2 deals that first month. 

One workaround could be keeping a separate spreadsheet to track your adjusted tax basis accurately and only using Stessa for operational insights.You could also reach out to a cpa and see if they have a specific recommendation for software to use.