This is a great place for long stay. The studio is fully equipped; if you're missing anything, Alex is very responsive and very accommodating with items you need.
The studio is located on the third floor with lift access. Neighborhood wise, it's close to Centro Historico, an ecobici station, 2 Metrobus lines, a large Walmart, to name a few. There are 2 very busy and very delicious taco places nearby.
On top of the building there are shared washing machine and dryer that can be used with small coins ("fichas") that can be obtained by speaking to one of the cleaning ladies. They can also help with replacing sheets, towels, etc.
Over the month I stayed here, internet never failed me once. It's a pleasure watching streaming shows and movies through the ginormous tv. It's now placed in front of the bed instead of the sofa.
Hot water works in the sinks and shower pressure is great. However the bathroom lacks ventilation.
One side of the apartment has a full height glass window (with blinds) that faces the back/side of the building. This provides a lot of natural light but also view to the adjacent neighbors.
There is a standing fan that helps cool down the temperature. The sofa is comfortable. Bed is a tad on the smaller side for 2 people.
Overall this is a 5/5 place. Would come back.