The studio was clean. The bed was done, clean and comfortable. I used the microwave and it worked well. Sometimes the TV and the A/C was on at the same time I had no issue with going off/turning off by itself, they both worked. It worked well. The bathroom was clean and the light worked. The kitchen was clean as well. The studio is just like the photos. It's clean and it's in good shape.
The cons is the noise outside which has nothing to do with the studio. It's Center Madrid there is live during the nighttime, but for me it did not bother me because I knew where I was staying "Centro Madrid", and I was expecting the street noises. It made me feel like I was living in Madrid, which it's exactly what I wanted. I travel solo and I always felt safe inside and outside studio. I came back a few times during the night and I had no issue. It felt safe.
I definitely consider staying again in the future.