I have stayed at The Mosser twice now & find it to be PERFECT for the solo business traveler.
They have these single, shared bath rooms (about $100/night -- a steal for SF!) which are quite small but very clean, contemporary & include a robe, closet, large flat-screen TV & sink. Since I've just needed "a place to rest my head" before all-day meetings it's been ideal. Although the "shared bath" thing is not my favorite, the shower is tidy & only shared with 3 other rooms & I've never had to wait. Same with the toilet.
Plus, the location is fabulous. I felt totally safe & my room was very quiet. You are steps to Union Square, steps to Market Street, Starbuck's & Peet's Coffee are stumbling distance from the hotel. They even offer simple muffins & coffee complimentary in the morning.
A few small cons: valet parking is expensive $30+ & it takes at least 30 minutes to get your car - not fun when you're in a rush! The single elevator that serves the entire hotel can be slow-- again, annoying if you're in a rush. And, finally, the room doors SLAM loudly (Mosser - will you please address this?) so that you can be awakened several times at night if you have inconsiderate "neighbors". But, I would still go back to The Mosser as these small details do not outweigh the good points of this hotel.
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