The apartment is so lovely, clean, and in a great location for exploring Porto. We did have an issue a few nights into our stay with smoke coming into the apartment, which we think came from a chimney close to the bedroom window. It carried on for a few nights and was very unpleasant. The host said they have never experienced this issue before, so it may have been a one-off, but we checked out early due to the smell and having difficulty sleeping.