Not to burst your bubble, but you can't buy a condo in Denver to rent out via AirBNB unless it is your primary residence. Vindictive neighbors will report you. A lot of condo buildings also have restrictions on the number of units that can be full rentals at a time. The current prices and HOA's will likely have you losing money monthly for the first few years on a condo without even taking into account maintenance. There's also the fact that COVID has made rents decrease big time.
You also cannot live in a tiny home on a property or allow a permanent camper on your property unless you are constructing a primary residence. I'm fairly certain this is the case for all incorporated counties.
You're only real option is a duplex, but those are bought up pretty fast by all cash buyers. The competition is fierce! And when I've been looking they're basically 1.5x-2x the cost of a SFH, but on the same lot size. IMHO, the lot is the primary driver on price, so you're getting screwed.
**My perspective is strictly covering the immediate Denver area.