I stayed at Alejandro's place for 1 week, here are my thoughts:
Pros:
- easy check-in with a concierge person (she was very nice and helpful)
- Alejandro was very accommodating, responds quickly
- apartment is a bit dated but well equipped, sunny, and functional (comfortable bed, TV with cable, fast WiFi, well equipped kitchen, hot water always on, good storage space for 1-2 people)
- Building has a really nice rooftop with a pool and grill - beautiful view of the mountains, great sunsets
- plenty of stores and restaurants around the apartment
- walkable distance to most touristy things (Seafood market, Plaza de Armas, Museums, etc.) - about 10-15-20 minutes.
Cons:
- bedroom doesn't have a blackout shade so it gets very bright very early - in December sunlight would wake me up around 6-6:30 am
- Most of the gym equipment doesn't work and free weights are very limited (only one bar with 2x10 kg (but Alejandro warned me before so no issues here)
All in all, very good stay!