I stayed here for about a month and worked from home during my stay. Overall, I think the place is a good deal for the location and for the price. Definitely a place to consider if you want to be by the touristy parts of Santa Monica.
Pros: Location, the unit itself, and communication with the host. You're a block from the beach and about a 10-15 minute walk to the pier. You're also close to the Santa Monica promenade. Santa Monica itself is pretty safe and the residential side tends to be a bit quieter than towards the pier/promenade.

The unit itself was also pretty nice. It is a bit old, but I liked how the entrance was behind the building (it felt more private) and it's actually a pretty good deal for Santa Monica. It was great for one person, but it would definitely be cozy for two people (especially if you're both working). The Huntley next door does get loud on the weekends, but it generally quiets down before midnight. You can hear your neighbors, but generally I didn't have any issues at night.
Communication with the host was also great. I had a couple of items missing and a few that broke. Shayma helped me out right away and ordered me replacements :). Shayma also accommodated me arriving a day later and leaving a few days earlier with no issues.
Neutral: Internet. The internet was ok. It was laggy at times and it couldn't really support video calls with more than 4 people (I mostly just did calls with my camera off). I Generally got 6-8MB down and 5 MB up. I wouldn't recommend staying here if you're going to be working and you tend to have a lot of meetings.
Cons: Parking. Free parking is super nice, but the street parking can be a huge pain at times (especially during the day on Friday, Saturday, Sunday and during street cleaning times on Tuesday and Thursday). The City of Santa Monica has this weird two block rule and since the unit is so close to the promenade and Wilshire, you actually have less "blocks" to park. I generally found parking off of 2nd street in between California and Idaho. Also, someone was putting garbage on cars parking in certain spots off of California, in between 2nd and 3rd--this only started happening the last few days of my stay though.