Fillmore street is magical. It answers just about every need, from classy shopping down to 7/11 convenience stores and an array of restaurants, cafes and bars providing really good and at times creative food and drinks.
Marin's condo is right in the thick of this above the best bar, The Academy, run by a lovely man, Peter, who became a friend during the week we were there. The source of diverse information on not only the immediate area, but also further afield. The food is great, especially the pizza, and there are about 20 beers on tap and a good selection of wines etc.
Our top rating for restaurants is SPQR, and its also probably the most expensive, but not over the top. The sea urchin fettuccini will live in my memory. Getting a seat at the chef's bar gave us an insight to the operations of a busy kitchen and the ability to chat and get recommendations from those in the industry.
Our favourite breakfast location was Wise Bagelry in Fillmore. A short walk over Geary for the best bagel with cream cheese shmear, smoked salmon and capers and good coffee. A nice pace to this Jewish gem.
There is a deal of noise at the condo from the road below, but we got used to it quickly. In hot weather it can be a bit stuffy and there's no aircon, but according to locals the weather we encountered was most unusual.
All in all I would recommend Marin's condo as a great location from which to explore SF. A uber ride to the waterfront under $20 and downtown about the same.
Marin is welcoming and helpful, even the week after she had given birth! All in all the condo etc made our stay in SF just perfect.