Sara and Cosma are great hosts! The place is really close to the center and there are nice restaurants nearby too. The apartment itself is very well equipped in the kitchen and bathroom.
The only problems were tiny red spiders in the bed, bathroom, floor, and especially near windows. Even though they are harmless, they're still a nuisance to deal with. If you can withstand them, then this stay is very amazing! The wifi was not that great for work--good for phone, but video calls were not easy. They said they were getting their wifi fixed, so hopefully that gets better! They even reserved a table for us at a nearby restaurant (and paid!) as a result of the poor wifi. Lastly, you're living right next to the hosts so quiet hours are after 10pm and you can hear them occasionally, as they might be able to hear you too.
Ventilation in the room is alright, but none in the bathroom so it may stink up the small space for a bit; however, you can open the skylight above the bed for more air (they also have AC/heater).