The architectural plan of the present-day Katholikon is adapted to the well-known type of the three-aisle basilica, which, however has a dome and only one Bema apse. The largest part of the Church is built with chiselled limestone blocks. Internally it has two colonnades, which divide it in three aisles. The floor of the bema is higher than the main church, while at the dome Chirst Pantokrator is painted, work of the artist Gallenos from Rethymno in 1905. The wood carvings of the Katholikos are of excellent quality.
in which the young pupils of the surrounding villages received the basic education. In 1808 the Monastery was praised by the Patriarchate for its great financial contribution for the schools of the region of Rethymno.
In the time of the egyptian rule the authorities allowed the foundation of many greek schools. An important contribution to the expenditures for the financing of the schools was made by the local monasteris, including the Monastery of Prophitis Ilias, as it is also concluded from a relevant document of 1836. In 1864 the Monastery paid a considerable amount of money for the building of a girls' school in Rethymno.
Two unpublished patriarchial documents of the 26th if July 1861 and the 20th of April 1865 prove that the Monastery helped the schools of both the city of Rethymno and the rural areas.
Moreover, the Holy Monastery of Roustika helped many young men who loved learning to continue their studies and made them scholars, monks and abbots, many of whom also became brave fighters.