I had a wonderful time at Marcos studio. The studio is located between Ipanema and Copacabana with both beaches on walking-distance. I felt very safe in and around the studio, especially because of the presence of a doorman.
The studio itself is clean, comfortable and resembles the photos on the website. The kitchen is well-equipped and the fridge is big and works perfect.
A big advantage is the code-lock of the studio, no worries about losing your key.

Marcos directly responded on Whatsapp messages and was very helpful in case something was unclear. Check-in and check-out was very easy and I was able to leave late at night on my last day. I would recommend this studio to everyone!