The three properties are SFH near where we live. Definitely entry level homes, but in an awesome school district. We only buy homes that we'd live in.
Because my work schedule, my wife who is a SAHM looks at all the homes, she handles all tenant issues, and working with the contractors. When I get home, I do marketing, doing the leases, setting up back-end systems (e.g. google voice) and accounting. The toughest part frankly was trying to convince my wife to start looking at properties.
I went into real estate thinking that we'll lose money while we learn, but it hasn't been the case. The first two properties rented quickly, and I suspect that will be true for the third. Working with contractors is annoying.
As we get to about 5 rentals, I suspect we'll start using a PM but this definitely is a learning experience. I'll start on multifamily next year but it's tough to find good deals now.