This apartment in a newer building (less than 20 yrs old) is a short walk from the Powell Street Muni/Bart station. I took BART from SFO and easily rolled my suitcase to the address.
The apartment is on the back of the building, overlooking the back yards of other surrounding buildings, which would normally mean you are looking right into someone else's place, but above the roof of the building directly behind so instead it has nice views to the west. The views are spectacular from the roof deck, 2 flights up. It's a shared deck, but I usually had it to myself. I had great views of downtown, the Sales Force Tower, and down to Twin Peaks and Sutro Tower in the other direction.
Being on the back of the building instead of facing the street, the apartment is quiet, especially for the city. Bay windows capture the breeze so the place is light and airy. Towels and linens were premium, the bed was comfortable with a down comforter and a variety of feather pillows. I loved lying in bed at night and looking out at the city; including views of the Intercontinental Hotel and other high-rise buildings along with a lot of open sky.
Kitchen is fully equipped - I especially appreciated the full-size gas range with full-size cooktop, and oven, the full size refrigerator/freezer, the dishwasher and microwave. Host provides a good variety of cooking utensils, pots and pans, dishes, glassware and flatware - enough for several meals so I wasn't washing dishes after every meal. I had a temporary membership at a gym about a 15 min walk away and a nearby Target (4th and Mission) has a fairly good grocery department so I was able to walk to there and carry the groceries home.
There's an upscale apartment complex at the end of the block (5th and Clementina). Besides Market Street, many of the bus routes run along Mission, one block south of Market, so it's handy to get around.
Up Fifth street, between Mission and Market, is Westfield Center, home to Bloomingdales and other upscale retail plus a movie theater. It's a short walk, or cable car ride, from there to Union Square. Yerba Buena Gardens is a couple of blocks north along Howard. I also enjoyed morning walks to the Sales Force Park a public park on elevated space above a bus transfer facility, the length of several football fields, beautifully landscaped.
The only drawback to the place is that Sixth, at the other end of Clementina (while it's all right at that intersection) is a little rough and not a good route to walk to Mission or Market that way.
Otherwise, I walked everywhere in the wonderful SoMa neighborhood.
I really hope to rent this apartment when I am in San Francisco in the future.