Hotel Théorème, formerly the Dream Hôtel Opéra, is a refined 4‑star boutique hotel with just 26 rooms located in Paris’s vibrant 9th arrondissement, at the crossroads of the Grands Boulevards and the Opera Garnier. Its contemporary décor and warm atmosphere greet you from the lobby, where a bright glass roof, an honesty bar, and a relaxed ambiance create a soothing welcome.

Each room type – classic, superior, executive, or deluxe suite – features premium bedding, air‑conditioning, Smeg kettle, safe, complimentary Wi‑Fi, toiletries, bathrobes and slippers. Some rooms interconnect (up to 6 guests), perfect for families. The deluxe suite is particularly notable for its private terrace with panoramic rooftop views and its own sauna – a rare find in central Paris.

Breakfast is served buffet‑style from 7 am to 11 am under the glass roof or on a tray in-room, priced at €20 (50 % off when booking directly). The hammam is available from 7 am to 11 pm and included with superior rooms or available on request for others.

The multilingual concierge team anticipates every need: personalized dining or theatre recommendations, sightseeing arrangements. The hotel is pet‑friendly, has luggage storage, 24‑hour room service, and an optional airport shuttle.

In its lively neighbourhood you can walk in minutes to Opera Garnier, Galeries Lafayette, Musée Grévin, Drouot auction house, the historic covered passages, and cafés and theatres. Metro stations Richelieu‑Drouot (lines 8/9) and Le Peletier (line 7) are less than five minutes away. Paid parking is just 200 m away (Interparking rue Chauchat).

Ideal for travellers seeking stylish calm: couples wanting comfort and intimacy, families needing interconnected rooms, or business visitors centrally located. A few unique touches: the “Théorème” concept embodies a balance of design, services and simplicity. The honesty bar offers relaxed self‑service, and the hotel’s boutique scale gives it a personal touch.

Practical info: check‑in from 3 pm (early arrival on request), check‑out by noon (late check‑out upon availability), direct booking perks (breakfast half‑price, 15 % discount for stays of 3 nights or more), hammam access by reservation.