OB Cottage is in a fantastic location. 2 blocks from the beach as advertised and in walking distance to a ton of restaurants. You could get by without a car, if you don't plan on visiting the rest of San Diego, but we loved having 2 parking spots in the driveway and washer and dryer in the back patio.
That said, the cottage is old and could use some upgrades. The walls are rather thin and poorly insulated so we got a bit cold at night but were really warm during the day. You can also hear the fog horn going off when it's too foggy in OB. There's an A/C unit (attached to window) that helped cool down the space, along with a ton of fans. The blinds are really sheer though so it doesn't do much to help block out the sun.
There was some miscommunication between the cleaning teams prior to our check-in, so we were missing towels, blankets, and the hair dryer. Zeina was quick in responding and sending someone over in the next couple of hours with the missing items.
All in all, we had a good stay. The excellent location and other amenities made up for the cottage interior and mix up with cleaning crews.