My friend and I chose this gem of an apartment and loved it. The doormen were super nice and helpful. We arrived early and they stored our luggage and we walked across the street to have a late lunch at the fish taco restaurant. (Recommend it, too!)
The apartment is clean and well stocked. Remember there is no air conditioning, but you are on the 5th floor so you can open the windows and there are fans in both bedrooms.
We were quite comfortable.
You are a close walk to the US Embassy and shops, restaurants, bars and clubs in Zona Rosa.