We had a great stay (5 nights) at Athina ! The flat is brand-new, of high quality, conveniently equipped and was very clean and tidy at our arrival. At night it is maintained at the right temperature despite hot days (we also kept the shutters close during daytime). The two bedrooms were comfy and the sofa as an additional bedding is fairly good. The building itself was recently renovated and is well-located, near the Victoria metro station (however, please note that due to the narrowness of the street, some taxis may not drive through to pick you up or drop you off).
Above all we truly appreciated how Vaggelis was easy-going, responsive to our text messages and very accommodating (notably with the check in and check out hours, the luggages, the additional blankets and towels) ! We obviously recommend this place to enjoy Athens !