For the most part the apartment and location were quite desirable. The apartment is in a very central location close to many attractions and accessible by public transport. The apartment itself is basic and although older was clean upon our arrival. It was also nice to have umbrellas available to use especially since we had a day of rain. We however did experience a few set backs. First off, even though we had let our host know that our flight into BA had been delayed and we wouldn't be arriving until past midnight, and after she had assured us that she would make arrangements for the doorman to give us the keys, when we arrived the doorman had no knowledge or instructions from her. He was as helpful as he could be lending us a few pesos and directing us to the nearest gas station were we could try to get a hold of our host. Unfortunately the number that she had on airbnb did not work with Skype, and we were unable to get in contact with her. We returned to the apartment to return the money he had lent us. He did say he had found keys, and said we looked like honest ppl so he let us in. One of the set of keys that had been left didn't work. Once in the apartment there was no instructions for wifi, or even the apartment itself. The next morning when we tried to get our of the apartment we realized we had locked ourselves in, because there were no instructions left saying that the only lock on the door did not work.We figured out how to connect to the wifi, and saw that Esther had tried to get a hold of us that morning, and had even stopped by the apartment to make sure we had settled in ok. She also mentioned at this time to not lock the door from the inside... A bit too late! This time we did get a hold of her quickly and she got the concierge to let us out. He did let us know that since it was the weekend there would be no one at he front desk until Monday after 8am, so if we got Locked in again it would take longer for someone to let us out. We then found ourselves with the last bit of difficulty in that we left early Monday morning (7am) to catch a 9am flight. Esther was aware of our exit time, but failed to anticipate that there would not be anyone available to take the keys from us. We left our keys in the apartment, but you still need a key to leave the apartment building. Lucky for us there was someone that left the building at the same time we did, and he let us out. As a suggestion, we would recommend somewhat better instructions written and left in the apartment detailing things like wifi acces, which keys to use, when...