Karina was a very good host, and her apartment is quite nice! The pictures are accurate. Pros & Cons of this place are:

Pros:
1. Location is awesome. It is 3 blocks from the convention center and 5 or 6 blocks from Market street and the main downtown shopping district.
2. The apartment if quite large and nice.
3. Kitchen
4. Parking space is amazing to have considering cost of parking in SF.

Cons:
1. If you have never lived in a big city or are scared easily, then yes, the apartment borders a sketchier area of town. However, you walk 2 blocks up and it's quite nice with the convention center, businesses, etc.
2. This is not a hotel! Don't expect it to be. The master bathroom is modest and a bit on the older side.
3. Check in of 4pm and check out of 11am is slightly inconvenient and would have appreciated earlier check-in and later check-out.

Otherwise, this is an excellent place to stay, especially if you are going to be at the convention center, or if you are staying for several days and want a kitchen and want to rent a car and take advantage of the parking space. Karina was very accommodating!