We stayed 12 nights in Hotel Nikolas and we found it to be fantastic. It was very clean and the staff were so kind, helpful and welcoming, they were happy to assist with everything - transfers, restaurant recommendations, posting postcards, etc. The hotel is about a 20 minute walk to Fira, the main town, but there are a few restaurants and shops nearby in Karterados if you didn’t want to walk there so location was also very good. Buses also run to almost any part of the island from just up the road from the hotel. Excellent stay. Would definitely recommend.