Jan is a wonderful host. Her place is nice and tidy, well located (Valencia street is perfect) and near of a BART station. Would strongly recommend to stay at her place.
FYI, i read a lot of negative comment about The Mission District. Yes, it’s obvious that SF struggles with homeless and drug addicts and the Mission is also impacted by this. But it’s not worst than other neighborhoods ; trust me, we walked them all. Just be alert, careful and don’t show your valuable possessions and you’ll be just fine !