I stopped today at Dean Village for 10 minutes to admire the greenery and sun.
The Water of Leith runs through Dean Village and will take you all the way down to Leith via Stockbridge or 9 & 3/4 miles to Balerno in the other direction !
Dean Village is very photogenic
And there are a few benches that you could sit and read at or have your lunch. It only takes a few minutes to walk to from the West End, down Bells Brae and under Dean Bridge. Well worth a visit and a walk along the Water of Leith
Photos from a winter walk by Water of Leith / Stockbridge and Dean Village HERE aswell as the photos from today
Suitable for disabled ? Not really, but there is a small section that is suitable for wheelchairs. The Water of Leith has sets of steps 
