We stayed in ZEN STUDIO for 3 nights & can say that location is just magnificent. We used to buy fresh food at Campo dei Fiori (3 min walk) and cooked breakfast at home. It's very quiet and cosy with stulish design. The only conern is bathroom and sewage. The water did not go out, so our barthroom was full of water and we could enter bathroom only wearing shoes. The host did not call us back after request on bathroom. So, if you do not use bathroom at all - 5 stars for the apartment:)