Fingers crossed for your viewings, OP. It's a bit of a tricky one, because a lot of people who want the sort of things Exmouth can offer, a garden is a pretty major draw. I do wonder if a better photo of the front garden might help?
I have some friends who are looking in your sort of price range in Exeter (young professional couple, looking to start a family) and they have had a nightmare with parking, so lack of parking would really put them off. If the on street parking is good, I would get the agent to empahsize this in the description. Stuff like that really matters to people, because stressing about where to park every day sucks!
I had a look at similar properties nearby, and saw this one: www.rightmove.co.uk/properties/130363388#/?channel=RES_BUY
They've got a garage and the third bedroom is slightly bigger. The outside space looks worse, but I think if I was looking at your sort of house in this price range, I'd probably go for the one with a garage if I could stretch to 10k more.
There's a few other three beds on the market too, which are a bit "quirky" or need some modernising/work, but under your price, and with a usably sized third bedroom.
This place, for example, wouldn't suit everyone, but it has 3 useable bedrooms, plus an office space in the loft, and allocated parking : www.rightmove.co.uk/properties/85882161#/?channel=RES_BUY
I think it's worth looking really hard at what else is on the market, and thinking about whether you have priced competitively enough. It sounds like you want a quick/quickish sale- and there just aren't that many buyers about.