Modern design, friendly and helpful staff, we were given a baby cot for our daughter, the room was spacious, clean and comfortable. Breakfast was delicious and rich!

It was too warm in the room and the blankets were also too warm, and it was noisy if you open the window. We couldn't get a place at Neni restaurant for dinner, this was a bit disappointing.

The room was spacious and perfect for our 5 day trip. The details in the room and around the hotel were unique and well maintained. Extra bonus was the sauna and rooftop bar and restaurant with views across the city.

On one of the days there was no power in the property. We weren’t told about this before our stay and we only found out through a sign in the lift at very short notice. Power was meant to be out from 9-3pm however, there was no power up until around 5pm which meant we were showering and getting ready in the dark. There was no attempt to apologise or acknowledge this disruption to our stay by the hotel.

Quirky and stylish design. Great location. Comfortable bed. Staff were great. Thanks to Tamara for helping me book a much needed haircut ( l found the House of O’Haira on line with good reviews and close by. Shout out to Jana who gave me the best haircut). Bar and restaurant excellent. A welcoming relaxed atmosphere.

The only drawback was that, at the time of our stay, there was lots of construction work going on around the hotel which makes for some noise. Other reviewers have noted the noise really bothered them. We were on the 7th floor in the middle of the hotel so missed a lot of the ongoing construction noise.

We had a lovely stay at the 25hours Hotel The Circle ! Our 2-night stay over Christmas at this design hotel was a revelation of thoughtful details and exceptional service. Our sixth-floor room overlooked the cathedral and the cityscape. The bed - arguably the most important feature - was cloud-like in its comfort. Special mention goes to front desk manager Annika, who secured us our lovely room & a Christmas breakfast at NENI's. The sauna, with its panoramic views, became our daily winter retreat. For travelers seeking a hotel that combines style, comfort, and genuine warmth, this place delivers in spades.

This is one of the best hotels I've ever stayed in! Humorous space theme throughout, loved the little alien teddy on the bed! Free mini bar beers! Lovely helpful staff. Lots and lots of quirky, funky features like LPs and record decks, table football, work space with cafe on the ground floor. Lovely building too. 15-20 mins walk from the Hbf, can catch the metro 2 stops if you want. Plenty of food places and bars nearby. Absolutely recommended!

Restaurant on the 8th floor has great views. We had breakfast there one day out of a 3 night stay. However €29 pp is too expensive for what you get (you can get a slight discount if you book ahead) so I'd say don't bother.

The staff were amazing and the hotel is quirky and fun. Very hot water available, good shower, comfortable bed, plenty of space in the room and lovely soap/shampoo provided. The hotel has a great ethical approach and offers to plant a tree if you skip the room cleaning (if you want to). The breakfast was absolutely fabulous, a huge selection of really good quality cooked and cold food was available, including things like shakshuka cooked to order. Amazing view of the city skyline from the restaurant balcony. The finest real sourdough bread and real cheese selection were a highlight, even though I am not veggie or vegan I was impressed with the catering for these groups too. Beware the sauna if you are not used to naked German customs!!!

The only thing I would criticise is that I like my hotel rooms to have a nice carpet, as it adds to the feeling of comfort! The hard floor was not ideal.

The room design is really fancy - not your typical hotel room. The bathroom cosmetics are of a really good quality - clean ingredients and divine aroma; again, not your usual 10ml toxic shampoos and shower gels :) The location is also very convenient as it is right in the city center.

The rooftop restaurant + bar are subpar in terms of menu and experience, and the service at reception is questionable (two different receptions seemed to be unaware of the workings times of their own restaurant, insisting that it’s opened when it was in fact closed).

Very cool building and concept. Located just a short walk from everywhere we wanted to be. The complementary mini bar was appreciated. Lots of fun, quirky features and interesting design elements.

A bit more storage would have been helpful, the bath mat shower door combo isn't very practical and the open shower would make staying with someone you weren't very close to pretty awkward...

Excellent location, walking distance from the Dome and near a lively street full of bars and restaurants. Car park conveniently located near the hotel and if full there's another multi storey car park across the street, €25 per 24h. The room was clean, loved the unusual and futuristic design, the drinks in the fridge free, but no coffee or tea making facilities ( didn't matter to us). The Monkey bar from level 8 👌 Staff were extremely friendly and helpful and room was cleaned daily. This is my new fav. hotel when in Cologne!

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Beautifully designed space, lots of fun things to do in the lobby, unique room look and layout. Had Volvo e-cars for... borrow? Rental? Didn't take advantage of it but was a cool option. Also a TON of hotel bikes in the lobby. Great coffee bar/co-working space, a record shop, a rack of Walkmans with a cassette tape library... all very "cool" but also very cool.

Would have appreciated the curtain that used to be there between the sleeping area and the shower. Felt a little self-conscious showering "al fresco."