Eduardo's cottage is sized for a single person or couple and well-equipped for a long-term stay. The kitchen has everything we needed for 3 months, the WiFi was fast and reliable, there's an extra set of bed linens, etc. The water pressure and hot water availability were always good. There is a closet but no dresser, so we used the couch as a dresser. There is no laundry machine, so we used a service called Instawash (there is also a coin op laundromat a 3 minute walk away). You can get a reasonably priced bike rental from The Bike Hut near Oracle Park, and the neighborhood felt safe enough that we left the bike outdoors (though not visible from the street) for the whole summer.
Eduardo is a responsive host. He proactively notified us of issues, and was flexible about allowing us to store a bike near the house's side entrance.
The cottage is a 10 minute walk from Caltrain and a 20 minute walk from the Mission. Two bus lines to the Mission and the Financial District have stops a block away. A local grocery store, a convenience store, a liquor store and laundromat are around the corner.
You will be at the top of a *big* hill, so be prepared to climb a lot (or wait for the bus) if you don't have a car. The closest restaurants are a ~100ft descent to 18th St. Whole Foods and the remaining restaurants are another 100ft below 18th St.