OneOneO is a brand new place and it shows. Everything in the apartment was though about and it is very handy and beautiful. The location is also great. It is right on the waterfront facing Sliema marina and Valletta. Klesta is one of the best host we met. She is very responsive and what ever we needed she provided.
We were 5 adults staying there id the apartment fit all our needs (including parking place for a rental car).
So, I would say this place is highly recommended.