The BoTree hotel in London’s Marylebone district has introduced 77, a 550-capacity nightlife and events venue designed to support live performance, club programming, brand activations and private functions.
Set beneath the hotel, the two-level space has been developed as part of The BoTree’s wider events offer. The project converts a former basement into a flexible entertainment venue, using architectural lighting, LED video and immersive audiovisual design to create a production-ready environment for a range of commercial uses.
For hotel owners, venue operators and experience designers, 77 reflects the growing value of high-specification event spaces within premium hospitality properties. Rather than treating events as an ancillary function, The BoTree is placing performance technology and spatial design at the centre of a dedicated venue proposition.
The venue is scheduled to open on 26 September, adding a significant new capacity to London’s hospitality-led events market.
Architecture And AV Planned As One System
77 has been designed by Amsterdam-based studio Concrete, which has approached the space as an integrated environment rather than a conventional nightclub fit-out.
The venue uses an asymmetrical floorplan, tiered seating and a mezzanine to create varied sightlines across the two levels. This layout gives event producers several options for audience positioning, performance focus and hospitality-led programming. A sculptural staircase connects the levels and strengthens the vertical character of the space, supporting circulation while acting as a visual feature.
A key part of the project is the decision to integrate technical systems into the architecture. Lighting, LED content and sound are not treated as add-on production elements, but as part of the venue’s built identity. This is particularly relevant for operators seeking to reduce set-up complexity between different event formats while maintaining a strong visual baseline.
Continuous LED lines follow the curved geometry of the building and can be synchronised with the audio system. This allows the lighting environment to shift during performances, product launches, corporate events or late-night programming without requiring a full temporary production overlay.
LED And Lighting Support Flexible Programming
Behind the elevated DJ booth, a full-height LED video wall provides a focal point for visual content. Additional display surfaces extend the media environment through the venue, giving event producers a broader canvas for branded material, performance visuals or mood-setting content.
This media infrastructure is likely to be valuable for brand activations and private hire clients, where visual adaptability is often a core requirement. The ability to integrate brand assets, motion graphics and show content directly into the venue architecture can reduce reliance on temporary scenic builds and support faster changeovers.
For nightlife programming, the technical design provides the tools needed for music-led events, DJ performances and live acts. For corporate and hospitality clients, the same systems can support presentations, receptions, launches and experiential formats.
The combination of tiered viewing, mezzanine space and integrated media also gives 77 the potential to operate across multiple price points and guest profiles within a single event. This can support VIP hospitality, seated viewing, general admission and private group areas, depending on the brief.
A Strategic Addition To Hospitality Events
The launch of 77 points to a broader shift in hotel event strategy. In competitive urban markets, hotels are increasingly looking beyond meeting rooms and ballrooms, investing in venues that can support culture, nightlife, content production and brand experience.
For The BoTree, the new venue creates an additional revenue platform beneath the hotel while strengthening its position in Marylebone’s events and entertainment market. For the wider sector, it provides a useful example of how underused basement space can be repositioned through strong spatial planning and permanent technical infrastructure.
The project also shows how design-led hospitality venues can appeal to event organisers seeking ready-made production capability. As demand grows for adaptable spaces with strong built-in atmosphere, 77 offers a model where architecture, lighting, video and sound are planned as a single operating asset.
