Sofia's place is much better than the pictures! It can comfortably accommodate 4 people in the bedroom and an additional person on the sofa in the living room.
Sofia helped arrange a taxi (10 Euro) to pick us up directly from the port of Milos. Although her house is located 5-8 minutes walking distance from the port, you must climb up ~40-50 steps, which is tiring with heavy luggage and hot weather.
She and Marinos were extremely courteous and requested that we text them whenever we needed a taxi, since taxis are sparse around certain parts of the island. They would reply instantaneously and send a taxi right away; it was like having a personal concierge.
Overall, fantastic host & a great place to stay in Milos!