The good:
Nice and spacious house with a good view (just outside). Good A/C & heating, fast internet, and a nicely stocked kitchen (cooking utensils, etc...). Easy check-in, responsive host.
The bad:
When we checked in, we noticed a strange smell around the house, especially in one of the side rooms. Then we realized that the smell was of someone SMOKING cigarettes. Turns out the owner (not to be confused with the Airbnb Host) is smoking right next door. His room / side house is connected to the rest of the house via the tiny laundry room.
Thankfully we live not to far away, so I was able to bring our super strong air filter system. Without it, I think it would have been unlivable. We contacted the host about it, and sure enough the smoking stopped pretty soon. The host was even nice enough to come by with some air fresheners; although those don't work with the smell of cigarettes.
However, on our last night, around midnight, we smelled the cigarettes AGAIN! I guess the owner figured we might be gone already. Or maybe we wouldn't smell it. But the good ventilation system of this house is also really good at spreading any smell around. Thankfully our kids' bedroom wasn't affected. Otherwise, it would have been a nightmare.