All this talk of drinking tea and listenting to the radio reminds me that my house has a conservatory which is carpeted as a sun room (I sometimes drink tea in it). It has dwarf walls, clear side glass (maybe polycarbonate) and tinted roof (I'm sure that is twin wall polycarbonate). Carpet aside, it likely to be useful for growing in or is the tinted roof going to be a problem?
I'm in Scotland so it's freezing in there now (even with the blinds drawn back) but it gets very hot in the summer.
There are certain issues, like where to move the stuff that is stored there - several kayaks and stuff out of the camper while I work on it, and the table for drinking tea at.... But it's not exactly being well utilised at present!