Our stay in Rosas appartement was really nice. The interior of the flat is really tasteful and there is a lot of space. Everything was clean and there were good kitchen supplies to cook. Rosa was really helpful and friendly in case of questions. We would definitely recommend staying in Case Mariannina :)
Also Castellammare itself is really to recommend, especially the bakery next door, the restaurants and the beach you can reach by foot from Case Mariannina. It‘s a lovely place to visit.