Barrio Logan is a pretty great spot, and Oscar's place is gorgeous. The porch is really nice to sit and chill on in the evenings; taking in the sunset and drinking a cool beverage was great. I came down for a work trip with a colleague, and the two separate rooms were solid--very comfortable beds. Oscar was responsive, and waited for us to arrive at the place, even if we were a bit earlier than expected. Barrio Logan is a good spot, but it's a bit dark all around at night, so if you're going downtown, it may be best to take a taxi (no more than $4-7), as the Tram line goes through some dark patches. There's a great little brewery nearby that you should try, as well as some of SD's best tacos (and I tried a lot of spots while I was down there!)