I stayed at Karla's place for one month and the overall experience was great. The location of the apartment building is really good, close to Reforma and Isurgentes. The apartment comes with all the basic amenities and the plus of having a washing machine and dryer; especially for long stays. Communicating with Karla during my stay was very easy and she kept me posted on anything that was happening in the building. The building itself is very quiet most times with 24/hr security, so it's feels very safe and secure. There is the gym above the apartment but it was no bother for me as I was out of the apartment most of the day during the week and no one really used the gym late at night or on the weekends. Overall, I had a great and comfortable stay.