We had a wonderful time (4 nights) at Casa Melgar, good communication and easy check in with door code. Neighbourhood is really nice and safe, also just a short walk to the metro and there are a lot of nice restaurants/cafes in that area. The room itself was wonderful and even bigger than we tought with a real nice design, totally clean, comfortable huge bed, WIFI worked perfectly and everything you could need is provided. Also really good water pressure (not a standard in Mexico City). Highly recommended, we would stay again.