Burghard suggested we take a taxi from Lisbon airport to Sintra which took about 45 mins and cost 45 Euros with tip, a bit expensive, but when we saw how steep Sintra is we never would have made it up the back streets with our luggage, so a very good suggestion.
We arrived on a Saturday night and Burghard was waiting to direct the taxi to the door and he carried our luggage up the stairs for which we were very grateful.
The apartment was sparsely furnished but exactly as shown. What you can't see is how cold it is. It was much colder outside than we expected but also cold inside. The host pointed out two heaters but it was a long time before the place warmed up and we moved the heaters from room to room.
I did not want to leave heaters on when we left the apartment but we told our host how cold we were and he told us to leave them on. Then the situation was much better.

We arrived on a Saturday night so there was nothing open. We would have appreciated a few supplies because the supermarket was a distance away and wouldn't be open for a while.
The host did leave us a bottle of port as a welcome gift which was very nice.