My husband shares a similar (similar meaning, low-income-producing) passion as a musician which he would like to pursue full-time eventually.

I have a pretty advanced understanding of a wide array of investment products as I was a financial advisor for a few years before my current job.

Some private lenders (like Civic mentioned above) may have portfolio products up to 80% LTV, but those terms are far less favorable than conventional loans. 

I've also thought about marketing products that would generate repeat purchases based on what local businesses offer, and directing the guests to my property's site to purchase while negotiating some sort of deal with businesses that would make sense for a break on cost so I pocket a margin on the sales.

I recently attended a host2host.com zoom meeting, AirBNB Presents-Product Updates & Refugee Program.

Then you have the cash to make a full price offer on a smaller property of produce a 25% downpayment on 4x the price property. 

Think of your condo (or any non income producing property/single family home) as a LIABILITY.

I'm looking for some multifamily product if you come across any. 75 units or more, 4.5 cap+  

This is a second home and I already have 2 other rental properties producing income. 

Social media account management, content creation/production/editing, other marketing/advertising related tasks.All the best!