Hi @Lorraine505
First let me say your public response to the negative review was excellent. It was short, factual and addressed the issues the guest raised in a non-emotional manner. Good job.
3 stars seems a bit harsh to me as well; especially since amenities are listed and the other minor things were just thrown in there. The big issue seems to be your location (7-11 gas station?) and highway noise. Since other guests mentioned it too, you definitely need to be more upfront about these two issues. You'll find guests will not read your entire listing (they rarely get past the title and pictures). It's best to mention the not so nice things about your listing in several places as well as the positives. It is also important to disclose if a key amenity is missing (like an oven), I would disclose that this in the listing upfront. Guests RARELY read your amenity list. Most guests consider a full kitchen to include an oven. You can add one or make it clear there is no oven. A dishwasher is nice, but not necessarily a deal breaker. I would still mention "Please note there is no dishwasher or full-size oven in the kitchen."
Sections of Listing Are Missing?
I noticed several sections are missing on the Listing like Guest Access, The Space, Neighborhood and Other Things to Note. You can use these sections to explain more about your location. For instance, under Other Things to Note I would put "no oven or dishwasher in kitchen." I would also add something about your location near a 7-11 and highway noise and it appears your property is not fenced. I believe this is the reason for the child safety issue with the last guest. I would also add something about the highway noise and location near a convenience store (7-11) in Neighborhood section. To be fair, those are legitmate concerns for parents with young children.
Property & Safety Section
This is where you would add potential for noise (highway) and the location near convenience store. Most guests never read this section, so that's why you should mention this in other places as well:
Message to Guests With Children
To prevent further negative reviews, you may even consider messaging guests booking with children that you would love to host them and some positives about your place. I would then briefly state to please note your location is perfect for access to local attractions, but it is not fenced and you are near a local convenience store. Something to that effect. Better for a guest to cancel than for you to risk more reviews that will further impact your overall rating; especially as a new host.