The Flora Hotel is part of the Best Western chain and it was a very nice, modern place to stay. It's only a few minutes from the main train station, which is a big plus, since most people arrive in Lucerne via the Swiss Rail system. The flags hanging outside made it easy to find.
We found the room clean and comfortable but not huge -- and the elevator was tiny. It's considered a first-class hotel, sort of middle of the road. The amenities were fine -- we successfully received several important faxes via the front desk. We did not try the restaurant onsite.
The best thing about this hotel was really its location -- it's very easy to walk to bus stops for most, if not all, of the city lines, so getting around to all the tourist locations was a breeze.