This apartment was lovely, modern, clean, with a flat screen TV and fit all of our needs except one: SAFETY. Apparently a couple had the code to our apartment and walked in while we were there and began looking in one of the bedrooms. At first we were shocked and said a wary "hello" before they quickly said excuse us and left when they noticed we were there. We contacted the hosts twice. First through their company emergency number and once through their office. The company emergency number responder told us they would call back after he called the main office. I never received a call back to this day (3 days after the incident). After waiting for the call back from the emergency number for a while, I contacted the office and they said they would send someone at 11 am to come get our belongings and put them somewhere safe. We waited until around 11:20 am before locking our things in the bathroom (the only room that "locked." You could easily lock and unlock with a coin) and leaving the apartment since we only had this day to explore Barcelona. Although nothing happened to our belongings, this company's lack of follow up to at least explain what happened (for example: if the two individuals were company employees) or to simply change the code for our belongings and personal safety was extremely concerning.