Casa Galeria is very centrally located and great for big groups. There were 10 of us going, and we were able to stay fairly comfortably. The low price is what makes this place most attractive. We ended up paying about $102 per person for four days. But for travelers who expect slightly more luxury, you might want to keep looking at a higher price point.
First, the good. The host was very welcoming and communicative. He was always available via WhatsApp, and even delivered toilet paper when we were running out (with a group this large, you will run out). He also gave our group a delicious bottle of tequila upon arrival. His English is not great so make sure you brush up on your Spanish before you go, or have a translation tool handy.
The apartment itself was cleaned immaculately before we arrived. During our stay, we never had issues with running out of bathrooms to use, or places to sleep.
Then, the bad. Since we were going in August (rainy season), we had a few mosquitos sneak in through the gaps in the windows of our bedroom, and front door. It didn't kill us because only a small number snuck in, and we were getting bitten all day anyway, but it was mildly annoying/alarming.
We also needed ear plugs to sleep at night because there was loud construction happening right next to us. So remember to bring ear plugs!
The lights in the living room were also very dim, but we rarely stayed in so this one didn't bother us too much, but if you like to stay in at night, be wary of this.
Overall, we had a great stay, and the host was very kind and we were able to walk/uber to most places we needed to be.