The rooms are quite new, comfortable and clean. The staff is very helpful and friendly. The day we left at 5am, they even prepared us a breakfast box without us asking. The area seems a little bit sketchy at first sight, but you will discover that the whole city of Athens is like that. The metro is quite far from the hotel, but there are 3 buses (040, A2 and B2) that will take you to Syntagma square in about 10 minutes. There is a good bus frequency and they are also cheap (9€ for an unlimited, 5 days transport ticket). There are nice restaurants close to the hotel, just beside the church.