Casamona. Casamona International is a Real Estate company located in the heart of Barcelona, offering unique and different services.Casamona provide services in the sales, long-term rentals and holiday rentals.In their portfolio you will find a superb range of properties for sale and rent; each property offers something special, whether it is a sunny balcony or private terrace, amazing views, a lot of light or a great location. Many have been beautifully renovated and offer something truly 'unique and different.' The Casamona team is international and can speak a variety of languages.