Hello Zoë,
We had a very good time in Sérifos. The house is typical and very well located in La Hora. It's large enough for 4 adults. Your manager Soya gave us a good help when the ferries were on strike.
Two détails: the staircase is very typical but could be dangerous for young children.
This may be a temporary problem, but the toilet at the bottom smells very bad and you can not aerate the room.