Whilst iam not a professional satellite fitter, i have fitted a few, and i personally would have a satellite and receiver fitted.
If you do not want to spoil your view, why not a pole to fit the dish to, and carefully mark the position on all the brackets when aligned, so that it can easily be removed when you dont want it there, or when you return to the uk? The pole could be attached to brackets on your parapet/ handrail, and could be mounted with thumbscrews or hand wheels so that you could erect or dismantle it without tools.
You may say this is inconvienient at the least, but no more than the portable caravan dishes that pack away,and if the position of everything is marked with say a hacksaw, accurate setting up should be no problem.
I think this would be your best option, as all others seem to have downsides also, and this way the signal you are getting is the same signal you get in the UK, with the same quality.
If you want a recordable set up you will need a multi feed LNB on the dish, twin cable, and a suitable decoder that records the second feed.
you will also need a slightly bigger dish than a sky mini dish in southern europe , as the signal is aimed at the UK, and Spain is on the edge of the broadcast signal footprint.
Hope this helps, Rob.