The apartment was just perfect (equipped with everything you need, very clean and stylish). North park with all the restaurants, bars and little shops was within walking distance and also the bus station to the city center was 2 minutes away. If you want to go into downtown/little Italy/... you can take the bus or a uber (only 8 dollars).
We felt so comfortable in this apartment and it really made our stay in San Diego more extraordinary :) we would definitely come back!