We had a mixed experience at Roberto's.
The place itself it lovely and well located. It is stylish, well equipped, comfy (despite the bedroom being on the boulevard and therefor noisy), and a short walk from Venice beach, the canals and Abbot Kinney. Perfect to visit LA.
However our experience there was a bit chaotic and very stressful. Most likely due to overlap with previous guests, we got the wrong set or keys and ended up locked out with . all of our things inside. We had to get AirBnb customer service involved and despite their best efforts, no one was able to get in touch with Roberto.
Help came from the previous guest who we randomly stumbled upon at night and who gave us the keys. I would suggest leaving an emergency contact to guests as the situation could have been much worst (ie having to find a locksmith).
Also, we weren't provided any towels, nor the wifi password. No response from Roberto when we asked for it.
To this day, we still haven't heard back from him.