For me, La Candelaria was the best area to stay in Bogota, despite the somewhat sketchy feel later at night. A fascinating neighborhood, close to so many of the sights.
Hotel Casa Deco is nicely decorated (lots of bold colors) and has a really friendly and helpful staff. My room on the top floor was big. I was concerned at first because all the windows were frosted. Lots of light, but no view. (Presumably to protect the guest's privacy from the balcony that runs all around the room.) From the balcony, the views are sweeping and lovely, and part of it is sectioned off as a private balcony for the room.
As other reviewers have commented, noise can be an issue, which is the only reason I rated it 4 instead of 5. The open internal staircase funnels noise from the lobby and lower floors. From my room, the outside noise wasn't bad at all -- just typical city noise -- though I didn't stay over the weekend, when the neighborhood may be a lot busier.