Many people wince at sharing a flat while on holiday, but really you don't go to Palma to stay in the flat.
Aron's flat is spacious and it was spotless. It is in the very heart of Palma, 5-10 minutes from the main station. Our room had a small balcony which overlooked the street. I will say it can get quite hot and the street is noisy, but there is a fan in the room. There was one other guest while we were there, but we never even got to see them.
We were free to use the bathrooms and the kitchen as we felt like. We were able to come home at anytime we liked, no eyebrows raised and the checkout was very flexible. There is a lift if you have luggage, otherwise the flat is on the first floor anyway. No issues with the residents of the building while we were there.
We met Aron and his cleaner Melanie, who were such great hosts, we felt like we were visiting old friends. Melanie stayed in the flat during our time there and was really helpful - we felt like we were visiting our own grandmas. When I get to go to Palma again, I'll probably be looking out for Aron's flat.
In summary, great for a short city break, within walking distance from everything a tourist would care for and really lovely and welcoming host!