This was one of the best Airbnb/hostel experiences I've ever had.
That's such an underated place. You better book it asap before everyone catch up with how awesome that is.
This place really gives you the nostalgic/stylistic/community feel from the past. Everything matches the description pretty accurately, the floors doors and stairs really squick!
If you need something luxurious and high end then something else might suit you better, but for a real San Francisco experience that's the best place to be.
It really does have a working (mini) sauna!
The lounge room on the third floor is really great and underutilized, it has a great hidden skybox, be sure to check it out (need to do some climbing).
About the room and bed; It's a really great and well lit room, very quiet. The bed itself is really comfy but the best part about my stay was the skybox right above the bed. That "little" feature really made my going to sleep routine that much better. Be sure to enjoy it about an hour after sunset for some amazing colors (smoking a bit before really enchanted the experience)