This is a great studio apartment for single, or double, travelers. As someone who visits Rio relatively frequently, Ipanema is one of my favorite neighborhoods and this location can't be beat. Your are within steps of the beach, the train station, restaurants, stores, and supermarkets.
As for the apartment itself, it is an extremely comfortable studio with everything you would need. The bathroom is great, the wifi and cable are wonderful luxuries, and the full kitchen can be very useful. If you are a light sleeper, the only thing that may bother you is you can often hear the exterior door to the apartment building opening and closing. It wasn't a bother for me.
As for Brux he is an amazingly responsive and flexible host. I had a very early arrival and a very late departure, and Brux was extremely open about being able to accommodate my needs if he could. He describes himself as an avid traveler and mentions that he wants to make it easier for other travelers. The consideration he gives to a guest's experience demonstrates that. Thank you again Brux for being amazing. Everyone should stay here!