Alvaro is a very generous host. He allowed us to check in and check out late in order to accommodate our weird flight schedules. His directions to his apartment were very good/thorough. He doesn't speak any English, but communication with him was great. He responded quickly and kindly every time.
If you are looking for a luxury place with amenities, I wouldn't recommend this apartment. For a place to sleep and stash your stuff while you explore the city, it works well enough. It's centrally located, very close to the metro and a short walk (less than 1 mile) to Plaza de Armas. There's also a huge grocery store just across the street. The apartment was clean, but could use a deep clean because the walls and floor were filthy. All the sheets, towels, as well as the kitchen and bathroom were clean and ready for our arrival. I'd say this is a good place to stay, but don't expect much. The wifi in this apartment is super fast, though!