Posada Ruiz #2 was our second hostel in Antigua. It is quite basic with two outdoor sinks and no soap or towels available. The showerheads are wired with heaters but they were inoperable at the time of our visit, so we showered cold. We stayed three nights and were woken by loud music and crying babies several times. The mattresses were beat-up but of higher quality than those at Kafka or Jungle Party. Double rooms have electrical outlets but singles are plugless.
Despite its problems, Posada Ruiz provided good value at the very bottom of the lodging market. For 40Q/night for a single, I'd stay there again.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.