The apartment is awesome! A large terrace in the centre of Madrid is truly a unique experience. You won't regret it. I didn't get to meet Teresa, because she was on a holiday, but she arranged everything very well. Although a friend of her let us in and explained everything, she still texted us all the time to make sure everything was alright.
Location of the apartment is perfect. Everything is new! Wifi and airconditioners in every room. Beds are awesome! Nothing bad to say about this apartment.