Can anyone suggest window treatments for these two windows of our cottage which we're just starting to renovate? Walls are 25" thick stone, screens on exterior. Both ground-level with public walkway passing by outside, so how to get (1) some privacy (2) while still permitting as much ventilation as possible (we usually have windows wide open as shown (and even sometimes remove window panels entirely for the season).
Prefer to have entire sill available to the inside for fan and/or lighting.
Wide-slat venetian blinds just inside the screens would 'tick all the boxes' for me, but worry they'd deteriorate quickly in the elements.