Stayed at Kelly's place for 3 nights over a weekend. it is a clean, well presented apartment. Everything was very easy. Kelly was always quick to respond to any queries and was attentive but not intrusive in her communication. Aghios Nikolaos is a safe area with many bars and restaurants within a short walk. Getting around Athens from the apartment was easy, the Metro is a 5 minute walk away and then it takes just 10 minutes to reach Monastiraki and the heart of this wonderful city. I would highly recommend staying at Kelly's place as either a single person or a couple.