Mamula Island by Banyan Tree, Montenegro

Mamula Island by Banyan Tree is not a hotel you simply check into. Set inside a restored 19th-century fortress at the entrance of Montenegro's Bay of Kotor, it is dramatic, deeply atmospheric, and unlike any other luxury property in the region. With only 32 keys, three pools, excellent dining, and a serious wellness offering, it delivers a rare sense of privacy — but it also comes with a layered history that deserves to be understood with nuance.

A fortress turned island retreat

Arriving at Mamula Island by boat already sets the tone. The hotel occupies the entire island, a circular stone fortress rising directly from the Adriatic, surrounded by the open sea on one side and the Bay of Kotor on the other.

It is not a resort that relies on obvious glamour because the drama is already there: in the walls, the arches, and the heavy stone corridors. The restoration is impressive because the building still feels like a fortress. The architecture has not been erased in favour of a generic luxury-hotel language. Instead, the contemporary interiors sit within the historic structure in a way that makes sense.

The history & why the wording matters

Mamula Island has not been without controversy, and I think it is important to address that directly. Online, the hotel is often reduced to one attention-grabbing phrase: a "concentration camp hotel." It is the kind of wording that travels quickly across headlines and social media, but it also flattens a much more specific and historically complex story.

The fortress has a history of roughly 170 years. It was built in the 19th century for defensive purposes and, during World War II, was used by Italian occupying forces as a prison for around 18 months. At the same time, it is crucial to be precise with language. When most people hear the term "concentration camp," they immediately think of the extermination camps of Nazi Germany: places designed for industrial mass murder. Mamula was not that. It was an Italian-run wartime prison and internment site, and while conditions were harsh and people suffered there, it should not be casually equated with Nazi extermination camps. This distinction is crucial — not because the history should be softened, but because it should be understood accurately. There is a difference between remembering history and using it as clickbait.

The hotel has incorporated a memorial and historical interpretation into the site, and there is a visible effort to acknowledge the past rather than pretend it never existed. Whether one feels comfortable staying here is ultimately personal. But I do think the conversation around Mamula deserves more nuance than the internet often allows.

The rooms to book

With only 32 keys, Mamula Island feels intimate by design. Still, not every room category offers the same value. My recommendation would be to choose one of two directions: either book one of the entry-level room categories, or splurge on one of the top two Sky Suites with the beautiful 19th-century frescoes. The entry-level categories already feel special because of the setting and architecture. The Sky Suites, however, offer a much stronger sense of occasion, with more generous proportions and original character that makes the stay feel genuinely memorable.

The categories in the middle, in my opinion, do not always offer the same clear value jump.

Pools, spa & service

During my stay, all 32 rooms and suites were occupied, yet it never felt busy. You can always find a quiet corner, a lounger with a view, or a slower moment away from everyone else.

The spa is extensive and very much in line with Banyan Tree's wellness identity. Facilities include a herbal sauna, salt room, steam room, sensory deprivation pod, and a full menu of massages and treatments.

For guests who want to do more than lie by the pool, there are also activities such as yoga, canoeing, and boating. It is the kind of place where you can make the stay as still or as active as you want, which is exactly what a small island hotel should offer.

Dining

The food was outstanding; Celeste, an open-air terrace restaurant, and Kamena, the indoor restaurant, were equally strong. Its sharing-menu concept works beautifully, especially for a group.

Parasol, the pool restaurant, was slightly more mixed. The drinks were excellent, and it is a great place to spend a lazy afternoon, but the Asian-inspired cuisine was less impressive than the food at Celeste and Kamena.

Breakfast was a highlight as well. There is both a buffet and à la carte menu, and the latter is a must for me in a luxury hotel.

Service: warm, but still finding its rhythm

The staff were friendly, kind, and genuinely helpful. That said, there is still the occasional sense of chaos. Nothing dramatic, and nothing that would stop me from recommending the property, but every now and then you feel that the team is still learning how to move together. It is the kind of inconsistency that usually improves with time, especially once team members are more used to each other and the hotel has had more seasons to settle into its rhythm. The intention is there. The rest is refinement.

The main thing I would improve is the beachfront service. The beach area itself is beautiful, but there is currently no proper drinks or food service there. If you prefer spending the day by the sea rather than by the pool, getting a refreshment becomes more of a hassle than it should be at a hotel of this level.

Final verdict

Mamula Island by Banyan Tree is one of the most distinctive hotels in Montenegro, and arguably one of the most unusual luxury stays in Europe. I would recommend it for travellers who appreciate design, history, and hotels that are more than just beautiful places to sleep. It is best suited to those who want something memorable and layered, rather than a conventional beach resort. Mamula Island is not a hotel for everyone, and that is exactly what makes it interesting.

Need to know

The speakeasy and the cocktails are worth remembering. The mixologist created a personalised drink for our group, and it was spot on. She is clearly very talented.

The speakeasy-style bar is also a nice touch. After dinner, when the fortress walls feel more cinematic, it gives the hotel an intimate after-hours energy. It could also be the perfect overall setting for a buyout to celebrate a special occasion.