Elena is a friendly, accommodating host. She's correct that it's "location, location, location" that you're paying for when you rent this place. You are literally a 3 minute walk from the beach. Do be aware, though, that this is essentially a basement (or "garden," in British English) apartment, with not much light and zero views.
Other guests complained about noise from the unit right above this one. That can indeed be a problem, but when I raised it with Elena, she immediately contacted the renters upstairs and asked them to be quieter, which they did. However, there is little insulation in LA housing in general, so chances are you're still hear some noise here. Bring ear plugs, have a friendly chat with your upstairs neighbors, and you should be fine!