Rotting Softwood Upvc French Door with Integral Window?

[robo1]

Hi, At present I have rotten softwood double french door to a patio with no window in room so ventilation is a bit tricky. Looking to replace these with a upvc french door that also opens inwards, however I would like a window either integral to one door that would not be used much or another idea is a single french door with adjacent side glazing window part of which would open - in place of one door. Never seen this online so just wondering if glazing personnel out there have. If no answers is there there is a good window and door forum online I could try. Thanks good people.

[welsh brickie]

you could have a full length tilt and turn door, with a fixed frame next to it.
The tilt and turn door will allow ventilation and will open fully, internally