Overall experience was pretty good! Kati and Elias were wonderful host! They timely communicated every info we needed. They were really helpful and nice with us! It was a pity they could not speak properly english so every day communication was a bit hard. The location is great to reach Adamas, the biggest town in Milos (3km away). A famous greek tavern(Oh! Hamos) is just 1 km far from Kati's place. We strongly recommend to rent at least a scooter when you arrive to the port in order to reach better Kati's place.
The only 2 things were the mould smell (this could be understandable since it's a cave studio - the host has also put a mould remover inside the bed room) and the poorness of kitchen equipment (essential for basic things such us forks, knives and spoons, sugar, soult, coffee machine and powder).
Thanks again Kati and Elias to contribute to had great time in Milos!