Lucero's place was convenient to stay; right by Retiro subway and tons of buses and taxis, which I never even took because it was just convenient for me to walk everywhere (to WeWork, restaurants, etc.) Although living by a busy transportation area is convenient, the cost is going to be street noise. It could be really loud from all the cars, massive buses and trucks, but if you have ear plugs then it's fine. Shower had good water pressure and hot water. Kitchen came with electric water kettle and microwave and wine bottle opener which is really all I need these days while traveling. Internet was fine.
The area was pretty safe overall; I was fine walking around late at night (before midnight.) If there are homeless, they do not bother you. Lucero was a great host; he had the cleaner change the sheets and towels during my two week stay and was attentive and always responded quickly! I appreciated his hospitality and stay at his place.