We really can't recommend this spot highly enough!
There are many excellent descriptions of the villa and garden already posted - suffice to say it is of very high standard, well-equipped and in a lovely setting with stunning views; especially to the north and Mount Ida and the west towards Matala and the coast.
The infinity pool is gorgeous, surrounded by a splendid - and usable - garden.
On top of all this, the Salle family - Liljana, Yannis and Dhimitra couldn’t be more welcoming and helpful, really going out of their way to look after you!
Sivas itself is a typical Cretan hilltop village having lots of charm and including a central church, at least 4 or 5 tavernas, a couple of cafés and some interesting shops - just 5 minutes or so away by foot.
Pitsidia and Matala are fairly close by ten and fifteen minutes away by car. Plus lots and lots of spots of local interest. Would definitely recommend, you won't be disappointed.