Yy to what Alison said about staging - I forgot to say this is what our EA suggested when we sold last year. We had two attic bedrooms - as well as two on the first floor and an annex bedroom that we used as an extra sitting room on the ground floor - with a small space (7' x 6') in the eaves between the two. As there were just the two of us and we work from home, our set up was to use one of the attic bedrooms as an office with the space in between as storage. The other attic room was laid out as a bedroom with a king size bed etc.
Before we went on the market our EA showed us pics of a similar period house in a nearby village that had a layout much like ours, but they had the two attic rooms dressed as childrens' bedrooms. This house had sold within a couple of months for close to asking price.
Therefore we decided to invest in a Laura Ashley cream brass bed (eBay), some bunting (a quick task on the sewing machine!) and a couple of ikea rugs. I painted the floorboards cream and dressed the room with (tasteful!) dusky pink accessories.
We moved the office into the small central space which meant buying new office furniture, but TBH it was a far better use of the space.
This meant we had four obvious bedrooms plus the flexible space on the ground floor which did have a newly installed bathroom adjacent should future buyers want to use it for that purpose.
You really do need to spell it out to some buyers!
When the house was under offer we resold the bed for a profit 
I should point out that despite being in 'popular' Wiltshire, houses in the mid price range as ours was tended to hang around on the market for upwards of six months. We achieved an asking price offer within five weeks, although we did drop the price after the first month and if we had put the house on at the (considerably higher) price several of the five EAs we had round suggested, it might well still be for sale now over 12 months later......