Few showings: Overpriced. If you were getting a lot of showings but no offers, then the house probably would be reasonably priced, but something inside (or outside: curb appeal) is turning them off. You have to get the people there, first of all. And when people are selecting what properties to consider, they'll start with the lower-priced ones.
As the others note, though, you need to have the inside professionally staged. Although I broadly said that your home is overpriced--and I'm pretty sure it is--if your Realtors have had broker's opens, then maybe the agents who visited were turned off by the wallpaper, by empty house (empty doesn't show well), or something else.
You've also got a problem, you acknowledge, because the house is larger than it looks from the street. My sister recently bought a house with the same problem. From the outside, it looks tiny. I'm sure other potential buyers drove by and decided, just by its exterior appearance, that it was too small. But her house is very large on the inside. Either a stager or a landscaper may have some suggestions to at least partially overcome that drawback.
Finally, while I'm not sure St. Joseph will help, look into feng shui and Reiki. I know, I know, both are kind of "out there." But many of the principles of feng shui actually make sense from a design standpoint. Google "feng shui sell house." As for Reiki (I'm a Third Degree Reiki Master), at least look into it. The concept is one of attracting, directing, and focusing positive energy, and that applies to inanimate as well as animate objects. Elements are similar, in some ways, to feng shui. It's not a religion or a cult. Think of it this way: Have you ever walked into a house and it just "felt right"? Warm, positive, welcoming? You couldn't exactly tell why. Sure, the furnishings were nice, the furniture was well-arranged. And maybe that was all. Or maybe some things were going on at the subconscious level. On the other hand, have you ever walked into a house and something just bothered you about it? You couldn't identify the problem. Everything looked OK. No bad smells. No dirt or grime. But it just didn't feel right? The first house may have been well-staged, and the second one not. The first house may have reflected many of the principles of feng shui, and the second one not. Or the first house may have had a positive energy to it, and the second one not. I wouldn't suggest this for everyone, but if you're open to St. Joseph, you at least ought to look into Reiki and feng shui.
Hope that helps.