The Bonaventure is my preferred hotel location each time I am in downtown whether it's for business or pleasure. I find the experience at this location to be consistently good, the breakfast buffet is excellent (still not sure how the cook the bacon to perfection EVERY time), the rooms always in good condition and the staff always friendly/helpful.
I find myself at this location multiple times per year and whether I reach out before my stay or engage with the front desk staff upon arrival I am nearly always upgraded to excellent rooms. If you are fortunate enough to engage with the Front Desk Manager Yi consider yourself lucky - he really knows how to make a guest feel valued.
The only downside to this property is the $47/day for valet parking - I know it's downtown LA but seriously this is pretty pricey given you are already staying at the property.