I suspect your biggest issue is the general state of the market and so to sell you need to stand out as the best house for the money, so you would need to be cheaper than the competition, perhaps priced in line with big 2 beds, rather than similar to other mid terrace 3 beds.
Issues with the existing listing - no one has mentioned that in the bathroom photo you can see that the top of the bathroom cupboard is dirty, the grout also looks like it maybe discoloured in places. That would make me think that cleaning and maintaining the property may not have been thorough which leads to thinking about will the plumbing all work well, is the boiler in good condition ect.
I would recommend thoroughly cleaning, using a grout pen if necessary to get that grout properly white, decluttering the bath seat, toiletries and sponges and getting the bathroom photographed again. (You can always put the things back in as soon as the picture has been taken).
The garden fences look like they are rotting, I'd be thinking I need to budget a few hundred pounds for new fences and may have to deal with neighbours who won't replace the fence / won't allow me to get it replaced.
In terms of sizes I think bedroom 2 is your biggest issue, I would expect a property of this type to have 2 double bedrooms and a box room. You have the box room, but all the cupboards in bedroom 2 mean that it looks like a single bed is tight in there. If you can't remove the storage and repair the likely damage to the walls then you will have to compromise on price to sell.
Looking at the sold and under offer similar properties, number 33 was end of terrace, double bed in both bedrooms, admittedly no downstairs loo, but they achieved £248,000 in December. A mid terrace would generally be less than an end terrace and they could get a double bed in both bedrooms.
Number 39 is mid terrace, but had a loft conversion so 3 double bedrooms and sold for £225,000 last September. I'm afraid that makes your asking price look very high, it maybe they were very keen to sell as it appears to have been empty, but that depresses the value of the street.