This is a good budget accommodation in a reasonably safe area of Los Angeles. Certainly the cheapest way to get two beds in separate rooms and a kitchen in an area that feels mostly safe. It's a mix of working class and newer more modern housing. However, Los Angeles as a whole has a much more severe homelessness and street crime problem than I remember from my previous visit to the city in February 2020. You will see homeless people, many with obvious mental health/addiction issues, and I personally saw human feces on the sidewalk. Children, and adults not comfortable in dicey urban areas, should not walk the neighborhood on their own. You should especially avoid the areas around Hollywood Blvd to the north of the apartment.
The walls are very thin. The host is serious about you keeping quiet and not disturbing the neighbors. If you have loud energetic fun in your apartment your neighbors will know. If noise through walls bothers you be sure to pack earplugs.