Iván and Carmina were easy to communicate with and very pleasant. Check-in/out was very easy. I would recommend staying with them for those reasons alone. It's a relatively cheap choice for staying in a neighboorhood that's central with easy cycling options to get around the city quickly since you're so close to the park. I've given 4/5 rating as the apartment itself was very loud at night (but that's the price you pay for staying in this neighborhood, which has plenty of bars/restaurants to enjoy) and we had trouble sleeping. The balcony isn't really big enough for two people but the terrace is accessible, but also not very inviting as in the pictures. Nevertheless, it's still enjoyable!
Thanks!