The location was perfect. Super clean hotel, nice service from the staff and we really liked the aesthetics of the hotel. Very comfortable bed and pillows.

The Breakfast buffet was poor, not representative of a 5-star hotel. They had an issue with the shower as the water was coming out of the shower and the bathroom floor was ending having water all over the place. The bed side light wasn’t functioning on one side of the bed. There is no room service if you need food at night. The hotel restaurant was closed throughout the day. I don’t think this is considered to be a 5-star hotel in overall as they claim which is why it’s not a great value for money hotel.

We had an absolutely lovely stay at this small cosy luxurious hotel in the heart of Ermoupolis. The hotel was luxuriously decorated in an "old castle rock" style and the room was modernly decorated with a luxurious touch, with carming colors and ambient lighting. The room even had its own private external patio, which was very quiet and relaxing. We had the most amazing relaxing and invigorating experience at the spa (>4 hours) with the Exclusive Spa Day couples package - really worth it, so you need to book your package quite early. The breakfast was quite adequate with a selection of healthy snacks. The staff served us with the highest level of service and hospitality, really friendly, eager to help in any request we had, and also accommodated our request to for a late check out in our last day of stay. Overall, excellent positive experience, and very good value for money. Highly recommended for couples.

Brand new hotel. We got local sweets and treats from Syros as welcoming gift. They have a spa area, wich unfortunately did not try. They have a nice restaurant and a terrace. We woke up late so we did not try the breakfast wich was included in the price. Location is perfect, walking distance to the city center and to every thing that Ermopoulis has to offer.

We did not figure out the AC control, so it was a bit to warm in the room during night. It would be nice to have more towel holders and a price list for the minibar.

- The location of the hotel is one of its great assets. Very polite staff also. - Loved the bed!

- I had some payment issues between booking.com and the hotel. The communication with the hotel was not easy and slow in order to sort it out (for a couple of days, I was calling the landline, and no one answered, except for the emails I sent). - The room we had was next to the hotel's roof garden, which had tables for customers. Exactly next to our window, there were tables. Luckily there were not any customers else it would be noisy. For the same reason (privacy), it was not possible to open a window or have any view.

Such a wonderful hotel, nice design of the room, perfectly located. It is closed to Vaporia and the urban beach, Ciele. The breakfast was so diverse and of good quality. The personnel was also great, looking after us, to make sure we have a perfect experience. As we arrived early in the morning, we have been invited to have breakfast and leave our luggage, until the room was ready (well in advance of the official check-in). We really enjoyed our stay. We truly recommend it.

There is nothing to be mentioned.

A wonderful stay on Syros - the hotel was beautiful, clean and full of character, the location was perfect for exploring the town, and the staff were exceptional. They couldn’t do enough to look after us during our stay - friendly, informative and thoughtful. From organising a room for us to rest and change when our ferry arrived on the island in the early hours of the morning, to preparing a lovely takeaway breakfast for our early morning departing ferry. Would highly recommend - can’t wait to go back.

Staying at Castro was such a pleasure. The staff were exceptional. Their recommendations were on point. The rooms were clean. The facilities exceptional. And the location was central. Would stay again and recommend for others to stay. Thank you Castro team for your hospitality we are appreciate everything you did for us.

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LOVE THE LOCATION, STAFF, SPA AND FOOD. MY ROOM WAS COMFORTABLE WITH BED SHEETS AND COMFORTER.

WHILE I REALLY LIKED THE HOTEL JUST A FEW THINGS TO CONSIDER...THE SINKS ARE VERY LOW AND I AM NOT A TALL PERSON. NO BATH TUB OPTION UNLESS YOU TOOK THE LARGE SUITE. THE TOWELS ARE VERY HEAVY IN WEIGHT. THE FRONT ROOMS ARE A BIT NOISY. MAYBE ADD AND ENGLISH NEWS CHANNEL ON THE TV LIKE CNN OR BBC.

Very friendly and efficient check-in and -out. Staff very helpful and caring. Rooms were immaculate and seemed very new. Although building is historic, interior is discreetly modern and comfortable.

Small Spa area opposite of reception is sub-optimal, but space is limited in this beautifully renovated historic building.

The hotel is beautiful. We appreciated the upgrade and helpfulness of the staff. Location is terrific. Walking distance to main square and harbour and shops. The bed was comfortable. Unfortunately the upgrade room was noisy. The breakfast was amazing, really top notch although the room was a bit 'cold' for morning. Good for a bar for which it doubles. I think they might use the outside room in summer and that would be much nicer.

The room we booked had no chair or anywhere to sit and was very small. The upgrade they gave us was on the back street level and unfortunately right where the motor bikes were parked, so day and night they were coming and going and even with the window closed, which I really dislike doing, we could hear them. And I really mean all hours of the 24hr clock.