Kelston Round Hill.
From Ashton Court Deer Park. Totterdown coloured houses. Thanks Myk for the information.
The coloured houses are indeed those of Totterdown, the nearest row of houses are Richmond Street, and you are looking out across the Avon Valley beyond the houses towards Saltford and Bath.
The two trees (which is actually a small copse) is Kelston Round Hill, which is on the route of The Cotswold Way long distance footpath.