I warmly recommend Faizan's Airbnb. It was clean, just like the pictures and Faizan was helpful and responsive.
The location was very nice, a bus ride from downtown and close to Balboa park. There are a lot of restaurants at a close distance.
The only thing to keep in mind is that there is no kitchen (just a microwave, a fridge and some disposable utensils) and no washing machine (but there is a laundromat 15 minutes walk from there).