The flat was great and for the most part was exactly what we needed. It is in a great location; near lots of cool bars and cafes, as well as being really central, so within walking distance of the main attractions. There is no noise from the outside, although some noise can be heard from the upstairs neighbour moving around, but this didn't bother us too much.
The reason we have only given four stars is because there was only one mug and one wine glass. When we let Roye and Marina know about this they said they would try to provide us with extras but we didn't hear from them and had to follow up after a day, at which point they said they weren't able to get us more. Not the end of the world but having to share a cup of tea each morning wasn't ideal.
Other than that we really enjoyed our stay and would recommend the flat to anyone looking to stay in the Malasaña/Chueca area.