If it were a 2 bed house and room was sizable I'd say go for gold. But with 3 beds anyway it's a toss up as to whether it is truly worth it. Could just be expense for nothing. Anyone needing a 4 bed house could do it themselves probably and many families would want to use it for a media/pc room anyway so waste of time.

I’d definitely add the door. Handy even for a study. I’d also consider adding the wardrobe. No one ever says there is too much storage.

Glass door

Plus, looking at that photo the living area appears to be quite dark, maybe that's the reason for the lack of a door in the first place.

Put a desk , and a single bed , in there . Problem solved .

Is this to sell?
3B + study is always good, yes?
Keep it simple & let the new owner use their imagination.

Personally, I would make it a hobby room, teen space or yoga retreat :)

Neither. Make it a formal dining room. In fact, if that's not a load bearing wall, make the door opening wider to allow more light to flow across the house to what looks like a dark kitchen.

Make it a butler's pantry with the long bench on other side that can be serve as a desk with printer and other gadjet. Thats what we did, it pleases everyone.

Is it possible to put a floor plan here also to answer a few questions: who lives in home now? are there children and what ages or are they planned for? Do you ever have house guests staying or sleep overs? How many bedrooms are there? What hobbies do you or others living there have? All that kind on information would sway my answer... So not quite so easy really but very happy to assist. Cheers Margot PS where about are you because if it is a small city dwelling people might like study more than bedroom....but as someone said: put a robe and desk and a bed and both answered!!