Zac's House is unquestionably 5 STAR. However, the air conditioning is broken (it should be fixed this summer), and the host provided a portable air conditioner, which wasn't enough for our large group. Other than that, the house is well-organized, clean, and appropriate for large groups.
Zac and his co-host gave me clear instructions and responded quickly to my questions. Without a doubt, I would book it again in the future.