The good--prompt communication (even when the conversation was about difficult issues) and the house was clean. Other reviews have commented that the neighborhood is not safe--coming from Capitol Hill in DC, I found it to be a normal city, neighbors were nice, and as a single woman with my kids I felt safe. I think it depends on point of reference.
The bad--barking dog next door from 3-4am our first night when we had an important appointment the next morning and intermittent barking at all hours the remainder of our stay. When I texted Sergio about it the next morning (didn't want to bother him at 3am!), he said other guests had complained as well, but other than contacting his neighbor in the moment, there was nothing he could do. As a fellow Host, I suggested sharing info about the barking dog in his listing so guests could make an educated decision before booking. Also, during our stay my kids wanted to do their back to school shopping (SD has some great stores!) and we brought our new items home and washed them on cold, only to discover that the hot and cold water lines had been switched. So all our new items were actually washed on super hot water and shrunk so they were no longer wearable. Sergio did reimburse us for the majority of clothes damaged and cited a previous guest as being responsible for the switched lines which seemed odd but I guess possible?