Pros: The location. The apt is situated in an excellent and central part of Beverly Hills. If you don't plan on staying too much time in the apt, it's ideal.
Cons: You can hear your neighbors' everything every minute of your stay. If you're a light-sleeper, good luck. The walking from upstairs, the cars from outside, you can literally hear everything, which is probably true for them as well...so if you're not an extremely quiet person, it may raise issues. The internet was almost non-existent. May be this isn't the problem all the time, but during our stay, the Wi-Fi was so slow that we gave up using our laptop and relied on our cellphones. The apartment's furniture is also quite old...but I guess you get what you pay for.
Overall, Jay is very specific about his check-in and check-out procedures, having an unusually late check-in time of 4 p.m. so if you're fine with that, go for it. We also received a 7:00 a..m. text from Jay reminding us of check out, which was a tad too early for our taste.