The Best Adults Only Boutique Hotels in Belgium in 2026

In chic Ixelles, between Louise and Brussels City Centre, Maison Flagey occupies a gorgeous 1906 Art Nouveau building. The house feels right at home in the neighbourhood, celebrated for its architecture and grandeur. The hosts seem immensely proud of the space and dedicated to making sure guests enjoy it. There’s no spa or fancy-pants restaurant here – just good, old-fashioned guesthouse hospitality. It’s not central here, so if it’s your first time in Brussels and you want easy access to the sights, then we’d recommend you somewhere else. But we… > Read Our Full Review

Faubourg 21, just off Waterloolaan, mixes the intimate scale of a boutique hotel and the chic decor of a design hotel in a grand old building with centuries of history. It’s adults-only, although the no-children policy applies only to under-12s, so you’ll still find the occasional chic family among the guests, alongside fashionable couples and indulgent solo travellers It has style, comfort, and a fabulous on-site restaurant and spa, so you’re looking at something very indulgent for absolutely anyone. The venue is a 19th-century town house. The decor is handsome,… > Read Our Full Review

Tucked away on the side streets just off the iconic Avenue Louise, Made in Louise offers something refreshingly personal amid Brussels’ upscale shopping district and its parade of high-end brand names. It’s owner-run, it’s adults-only, and has a nicely calm, mid-life kind of feeling to it; like it belongs to your friend that just became partner, or just sent their youngest to uni and now fulfills a dream of opening a business. The result is a place that feels like an exceptionally well-kept home: comfortable, relaxed and quietly attentive.  … > Read Our Full Review