I agree with Helenscolour. Out of those two images. The paving looks more inviting and the deck looks cold and boring. However, I would usually be more drawn to decking I voted for paving.

I think that stamped and stencilled concrete only became popular in the 80's. I am mid century myself, and we only had plain concrete if we were lucky. Further to the comment above, I have had three stamped/stenciled concrete jobs done, and both have faded terribly. Go for plain or exposed aggregate.

The period and style of your home suggests gravel as the medium of use. Grey, not blue and fine. Some products have clay 'fines' amongst the small gravel that enables the product to compact really well when laid properly. You can push prams etc over it without a problem. Paving and concrete cause drainage problems with runoff warranting drainage to accommodate excessive run off. Gravel and aggregates absorb the water. The cost is much cheaper but also looks totally better. The sustainable alternative is always about thinking differently.

With a dog, deciduous trees and four boys I have to sweep our timber deck almost daily and wash it regularly. However it doesn't take a lot of effort for it to come up looking clean. The sand & smaller particles sweep between the decking boards making it an quick clean over summer.