Cute boutique hotel! Rooms are beautiful, functional and the beds as with all Kimpton hotels are the best! The hotel is in a great location, very close to the Garden and T if you’re looking for that. The customer service was excellent, used their “forgot it, we got it” service and had hairspray up to my room in no time and had the bellmen hold my luggage after check out so I could do some shopping as I was not leaving the city until later in the afternoon. The lobby area is small, they host their evening wine hour there and it can get a bit crowded with people coming and going.

The service at this hotel was amazing. I've traveled all ove the world, and have never run across such accommodating, cheerful helpful staff. Lauren and Michael at the front desk were especially kind. The rooms were fabulous - clean, spacious, beautifully decorated. The beds were the most comfortable of any I've ever slept in!! When we arrived, we were greeted by chilled bottled water, a plate of fresh sliced fruit, and a very nice handwritten note from the hotel staff. The buffet breakfast was superb. Every evening a free glass of wine was served in the lobby. Coffee/Tea service in the lobby in the morning was complimentary, and was of the utmost quality. There was always iced lemon water in the lobby also. Such attention to detail is not common nowadays. We had appointments at Mass General Hospital, and asked to leave our luggage in the room after checkout time. It was no problem. I can't say enough nice things about this hotel!! Roger, Karen and Lauren Quirk, Lubec, Maine.

Kimpton hotels are generally pretty awesome and I have to admit i was psyche to get to try a new one in Boston. The onyx is close to Boston garden in the north end, and since I usually stay at the Marlowe in Cambridge, I was excited to see how the onyx fared.

Let me say this - it was a solid hotel experience, but not as good as my other kimpton stays. The bed was fantastic, the furnishings and style top end, but I missed the designer public spaces and high quality restaurant/bar i've come to expect. This felt more like an efficiency hotel for someone who was not going to spend any time in the hotel. Plus: they had a car service ready to go on demand, which was a lifesaver as it was tricky to catch a cab. Minus: the lobby/restaurant was small and not as welcoming as other kimpton properties.

My family of four took the train from Portland into Boston for a weekend Red Sox game and stayed at the Onyx. Neither my husband or I are especially familiar with Boston so we looked for a hotel reasonably close to North Station to make our navigation easier on arrival. This hotel's location was ideal for us in that sense. We were warmly greeted in the charming lobby area (I think the kids were mostly impressed by the revolving door and lemons floating in a water dispenser in the lobby... what can I say, they are easy to please) and promptly checked in. The room's decor was really well represented on the hotel website overall- the size was pretty tight for the four of us, but we sort of expected that given the location. Everything was very clean and the stay was a good one. Walking in the area after dark on the way home from the game was a little uneasy being poorly lit with little foot traffic; my husband and I certainly felt like we needed to be very alert although we had no actual problems. The only reason I give this hotel a 4 instead of a 5 relates to the kids. Besides location, the biggest sell for us was the information on the website that spoke of kid sized robes in the rooms, a welcome gift for the younger guests, kid comment cards etc... After settling into our room around 3pm we called the desk for kid-robes etc... and were told they would be delivered shortly. We called again a couple of hours later before heading out to dinner, and then again when we arrived home from dinner. The robes finally arrived as the kids were crawling into bed for the night. We never saw any of the other "Kimpton Kids" amenities during the stay or the comment cards on check out. In fact, the kids were barely acknowledged. They were oblivious and it did not hinder our good time, but it was a little disappointing given the promotional build up. I would stay here again if it were just my husband and I with a king sized bed, but with the kids too next time we'll likely opt for something that gives us a little more room to spread out and is closer to the ballpark.