Guido is very prompt with his responses. This isn't the sort of experience where you will feel abandoned or hoodwinked. He is very helpful and patient. The apartment itself is good. It's walking distance (around 3 blocks) from the parks in Condesa around which there is life in Mexico with all its glory: great food, park salsa, shops, drinks etc. The only heads up I'd give to someone else is that the apartment is on a busy Main Street which is fine because you can't really hear any noise at night. Also, there are 3 flights of stairs.