I stayed at CALMA for two weeks in July and I enjoyed the time there (THANK YOU for having a fan available!)
ALL the staff were great and friendly.
Location was super - it was close to many restaurants (Vietnamese food, Mexican food, döner, sushi, etc.) which is good because you'll be eating out a lot since there is no fridge or small kitchenette.
I don't think it's meant for long stays but I didn't have a problem with it.
The room was spacious and it had a desk to work on (although at times, the internet was a bit slow).
Bed was also comfy and the entire place was clean.