This place was indeed located close to Balboa Park and the San Diego Zoo. We had a great time on our trip and found the hosts quite responsive to all communications.
It's worth noting that the home is RIGHT on the freeway and they do allow pets in the downstairs units as well, so we experienced a lot of noise at night from traffic and some dogs in the lower unit, but that wasn't too much of an issue for us.
We did find some of the amenities missing- there was only a partial roll of toilet paper, no trash bags, no dishwasher soap for the dishwasher, etc. but the hosts were great about reimbursing me for the toilet paper I had to buy and did bring the missing supplies I had messaged them about, so they made some points back there.
It is a cute place with a nicely open feeling, easy to hang out in when not out and about. I wouldn't rely too heavily on the "fully equiped" kitchen if you usually plan to cook all meals at the house like we do, since there were a few pans and general utensils but missing major basics like an actual pot to boil water in. To be honest, it's hard for me to tell if the home was lacking, or if some recent guests had perhaps taken things with them. Having said that, if I were coming to stay in San Diego again, I'd be ok with booking here again as long as it was post-Covid and I felt comfortable eating out for most meals.