I am typing this from the lobby now- sitting drinking coffee in front of the fireplace. Probably my favorite lobby in SF! Fireplace, lots of cozy chairs/seating, computer at a desk, water infused with fruit. 10 steps away is the SF Bar & Grill. IN fact check-in is thru the restaurant (probably saving $ on staffing front desk). GREAT beer selection on tap, good food- moderately priced. You do get 2 FREE drinks for staying here.
The room we got was on the 2nd floor (right above bar)- it was nice being steps from lobby/bar, but LOUD in the middle of the night- STREET loud. We heard people yelling at 1am, basic SF hustle and bustle. I would suggest asking for a room AWAY from the street. The ROOM itself is small, good for small children, but don't spend too much time in the room. The point is SF is amazing... walk to the trolley- 75 feet up the sidewalk! You need exact change! Hop on $7 a person, and take it over to Ghiradelli Square! The opposite direction is only 4 blocks down to the financial/shopping district! (just walk).
100feet in the other direction from the lobby is the GATE to ChinaTown and a STARBUCKS! The location of this place is amazing! We did MACY's Cheesecake on the roof yesterday - 5 min walk. We shopped the Disney Store (2 stories), checked out the 2 story APPLE store in Union Square. Got the Cable car yesterday over to Ghiradelli for ice cream!
My recommendation: Get a higher room, or one away from street. Beds are harder than I am used to. Rooms are small- so plan on being out and about more than in the room- especially since our 2 boys will FIGHT if confined too long in a small space! The breakfast is a GREAT basic spread. Hot food, coffee, cereal for the kids... WE WILL STAY HERE AGAIN!!!!