Aloft by Marriott Chicago Mag Mile — Event Spaces, Floor Plans & Capacities

243 E Ontario St, Chicago, IL 60611

8 rooms · largest space: Warhol, 1,375 sq ft128 m²

Aloft by Marriott Chicago Mag Mile gives Chicago event planners 8 rooms to work with. The largest space is Warhol, 1,375 sq ft128 m² (divisible into 2 sections). It holds up to 120 guests. Review the layouts and seating capacities below, then test your setup in 3D — free.

Across its 8 rooms, Aloft by Marriott Chicago Mag Mile handles theater-style sessions for up to 115, seated banquets for 80 and standing receptions for 120. 2 smaller rooms suit breakouts and board meetings. Exact figures for every room and setup style are in the chart below.

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Floor plans

Detailed floor plans for Aloft by Marriott Chicago Mag Mile are published on the venue’s official site.

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Room capacities & dimensions

8 rooms, 9 configurations. Combined and divided set-ups are listed under their room.

Room capacities and dimensions for Aloft by Marriott Chicago Mag Mile
SpaceSq ft / m²CeilingBanquetTheaterClassroomReceptionConferenceU-Shape
EscherPlan this room →775 sq ft72 m²11 ft3.4 m486436602424
LichtensteinPlan this room →465 sq ft43 m²11 ft3.4 m163218251212
MarckPlan this room →983 sq ft91 m²11 ft3.4 m648064803224
MondrianPlan this room →614 sq ft57 m²11 ft3.4 m323524451616
Warhol 1Plan this room →682 sq ft63 m²11 ft3.4 m405040602024
1 configuration with Warhol 1
Combined and divided set-ups that include Warhol 1
ConfigurationSq ft / m²CeilingBanquetTheaterClassroomReceptionConferenceU-Shape
WarholPlan this room →1,375 sq ft128 m²11 ft3.4 m80115721204848
Warhol 2Plan this room →693 sq ft64 m²11 ft3.4 m405036602024
Additional spaces (dimensions only) (2)
Additional spaces with published dimensions only at Aloft by Marriott Chicago Mag Mile
SpaceSq ft / m²Ceiling
Pre-function (19)Plan this room →409 sq ft38 m²11 ft3.4 m
Pre-function (2)Plan this room →988 sq ft92 m²11 ft3.4 m

Figures from published venue data; blank cells mean the venue hasn’t published that number. Verify final counts with the venue.

Frequently asked questions

How many event rooms does Aloft by Marriott Chicago Mag Mile have?

Aloft by Marriott Chicago Mag Mile has 8 rooms. 9 configurations are listed on this page.

What is the largest space at Aloft by Marriott Chicago Mag Mile?

Warhol, 1,375 sq ft (divisible into 2 sections): 22.5 × 61.1 ft, 80 banquet / 115 theater.

How many people can Aloft by Marriott Chicago Mag Mile seat for a banquet?

Up to 80 in Warhol. The next largest room, Marck, seats 64.

Can Warhol be divided?

Yes. Warhol divides into 2 sections: Warhol 1, Warhol 2.

What is the ceiling height at Aloft by Marriott Chicago Mag Mile?

The highest ceiling is 11 ft, in Escher.

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