It is a tiny small jet, that I do not personally like but quite charming after all.
It has very small overheads (only on the right side). Surely you will be granted a window or an aisle seat (there's no other choice). Seats are pretty cramped, but if you get those by the emergency exit (row 11 on BA if I am not wrong) it will be great.
It is not particulary noisy, but sometimes very cold or very hot inside.
It is a sort of "love or hate" airliners. Definitely worth a ride!
Hope it helps.