You seem to be using an online agent. I have no experience with this one, but every other online agent I have dealt, as a potential buyer, has been awful. It would always take forever to book an appointment, they were clearly all understaffed, etc. Two acquaintances who sold in another area said similar things: they both had many more viewings when they switched from online to traditional agents, keeping the same price, ie suggesting traditional agents have a bigger book of prospective clients they can contact proactively.
Of course I have no idea if any of this applies to your case, but they're points I'd consider.
For the life of me I will never understand why on Earth in this country you are so obsessed with describing properties by the number of rooms rather than by square footage. I have seen 3 beds larger than 4 beds, etc! It's not uncommon. In most of continental Europe properties are described as "100sqm 3-bedroom" or something similar.
I agree the ground floor room should be a lounge, not a bedroom.
The outside of the property is really ugly and off-putting. Sorry, but no point in sugar-coating it.
The separate taps in the bathroom is something that makes my continental European self cringe (why, oh why, could someone please explain WHY?) but that's easy to change.
This is a 3bed with parking at £420k , with separate kitchen, dining room and lounge.
www.rightmove.co.uk/property-for-sale/property-65124451.html
Look how much more rational the layout of the rooms is.