Buildium is commonly recommended for smaller PM companies.

But I wanted to collect some recommendations in the meantime. 

I highly recommend investing in a property management software, such as Hospitable, for syncing your calendar, automating messaging, and scheduling cleans, as well as a dynamic pricing tool, such as PriceLabs, for optimizing your pricing based on market demand, local events, and seasonality. 

Did you work with any real estate professionals (agents, lenders, etc.) that you'd recommend to others?

Any recommendation for a good home warranty for a multifamily rental

Highly recommend you DM @Samuel Eddinger and buy him lunch to pick his brain!

@Greg StrunakA good real estate accountant can save you thousands of dollars by leveraging entity selection and formation, tax deductions, cost segregations, bonus depreciation and tax planning.I recommend finding an accountant who specializes in real estate taxation, business taxation, financial planning and tax planning.You may want to consider working with your accountant remotely to expand your options.I would also recommend looking for a accountant willing to work with you throughout the year.

My recommendation is get a self directed IRA and have the real estate be owned by your IRAYeah,  I have heard a lot about the self directed IRA.  

They should know more than the people at a big box store and be able to recommend a good one. 

Investing in Wisconsin and Illinois is a great move—both states offer solid opportunities for multifamily and single-family rentals.If you’re looking to connect with like-minded investors or agents, I’d recommend joining local real estate meetups or REIA groups in the areas you’re targeting.