Belen's studio is in a really amazing location! You'll be a quick walk or Metro ride away from basically any sight you could want to see in Madrid. I did not need any recommendations but Belen was available and responsive for any questions that came up. Do note that the stairs up to the studio bed are STEEP. Finally, the street in front of the apartment can be a bit noisy at times at night so if you're a super light sleeper earbuds will be your friends. Overall, it's hard to imagine a better value for the location!