The house and room that my partner and I stayed in was perfectly nice and it was a lovely bonus to have Sandra (Jason's mom) replenish our fridge with milk and orange juice regularly. We didn't meet Jason but Sandra really was a fantastic host, she is kept very busy looking after these 4 rooms and she is doing a wonderful job of it. The washing machine and dryer were really good too. And the kitchen has all the equipment to make some nice breakfasts and dinners.
The negatives... We stayed here for 7 days so for us we experienced a lot of coming and going of guests which just made the experience a little less relaxing and homely. And unfortunately the location of this home is just not safe. We were reassured that no one who has stayed at this house through Air Bnb has had problems but to us I think that's pure luck. There is a shockingly high rate of poverty and homelessness in the area. Most of the time they don't speak to you but they are in large groups so this can be overwhelming. We just avoided being out any later than 9pm in the area if we could help it. To quote one minor run in though, walking back, at around 9pm a guy said to my boyfriend 'you better stop walking like that or I'll have to embarrass you in front of your woman.' My boyfriend doesn't walk with swag.. pretty sure it's a normal walk... All I can say is the area makes you feel uneasy, which is such a shame as San Fran is a lovely place and the Mission area definitely tainted our experience of it. Absolutely nothing wrong with the house, just in a bad spot.