We stayed here for our two week holiday which is probably longer than most guests.
For us it was great. The views are spectacular and the location beautiful if a little remote, but perfect for us.
The main Supermarket is a 15-20 min drive away so if you are there for a shorter break I would stock up before you arrive.
Most restaurants are again 20mins away, but we went to Porto 5/6 times during our stay which is 40mins but well worth a day out with plenty to see and do.
We had a VW Passat Estate and although the access is a bit challenging as its very narrow in places from the main road, I wouldn't like to do this in a larger car - it does become easier the more you do it.
Just a note, that the pool is shared with 4 other properties so at peak times in the year it will be busy. One nice thing about it, was that it is very deep so very nice to swim in.
It would be good too, if there were loungers on the terrace outside the villa so that if you desired you wouldn't always need to go down to the pool to lounge in the sun - just a small thing