The stay was superb, the staff was very helpful and kind. We were able to book the room two extra nights and were even given the option to chose between 3 rooms that were unoccupied.
We rented cars from the hotel which were super affortable (30 per day because not high season).
The only small thing that needs to be said is that the appartments are located right next to the ring road and to get tgere you have to walk besodes the road which is often busy. But tgis also holds true for most of the hotels in the area so it's not specific for stratos appartments.
We will gladly visit again.