The pension is very close to Fira and the rooms are very clean and comfortable. Housekeeping services are really pro, like in a 4+ stars hotel. We didn't try the optional breakfast but Mr Leivadaros was very helpful and offered coffee one day that we woke up late.
On top of that, the free transfer from the airport upon arrival - which normally costs 15 euros with a cab - made Leivadaros pension a really cheap choice compared to the provided services. Highly recommended!!!