My wife, dog and I were very excited to include Superman's home as part of our three week roadtrip to the Smoky Mountains! Well, OK, my dog and I were, but my wife was VERY understanding! The Riverview Mansion B&B turned out to be a very good place to stay in town. Despite its name, Metropolis is small, and the B&B is easily walkable to the Superman museum, statue, a very nice pub with a dog-friendly patio, and a very nice restaurant at the local casino. The hosts are very welcoming and pleasant, and will happily regale you with their fun stories of buying a midwestern B&B as two people originally from California and Texas!
The breakfast was very good, and the in-room hot tub was terrific!
As an older building, there was a bit more mustiness than newer buildings have, but we were very glad there was none of the overly scented carpet cleaner scents that are so common at mid-priced dog-friendly motel chains.
If your travels take you to Metropolis for an overnight stay, I recommend you consider Riverview Mansion as one of the best local places to stay!