THE FLAG Oskar M. rates, Frankfurt

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Axel's take: 9.1/10

A strong riverside choice for apartment space rather than full-service hotel extras. a modern, upscale aparthotel beside the Main, scored for what it is.

THE FLAG Oskar M. is a modern, upscale aparthotel in Frankfurt’s Ostend, and a strong pick if you value space and independence. Studios span roughly 42–56 square meters, with proper kitchens and private loggias; book a river-view category for the best outlook. Recent Tripadvisor and Expedia guests repeatedly praise the cleanliness, helpful staff and generous layouts. Groceries are close by, and the Römer is around a 15-minute walk away.

The trade-off is apartment-style service: housekeeping is scheduled rather than automatically daily, and there’s no gym or communal lounge. Some double beds are only 140 centimeters wide, so check the exact category. A few recent guests across Expedia and Tripadvisor also report Wi-Fi problems. We’d choose it for a longer stay or a self-catering city break, but skip it if daily servicing and extensive hotel facilities are priorities.

• Best for: longer stays and self-catering; couples wanting extra space; business travelers near the ECB

• Watch out for: some double beds only 140 centimeters wide; housekeeping is not automatically daily; occasional Wi-Fi problems

• Location: Main-side Ostend setting, with groceries nearby and the Römer around 15 minutes away on foot.

• Rooms: Spacious studios with kitchens and loggias; river views and bed widths depend on category.

• Cleanliness: A consistent strength across Booking.com, Expedia and recent Tripadvisor reviews.

• Service: Staff receive strong praise overall, though a few guests describe uneven problem handling.

• Amenities: Restaurant breakfast, paid laundry and garage parking; no gym or communal lounge.

• Fees and surprises: Parking, laundry and pets cost extra; pets are excluded from Executive categories, and the property is cashless.

Axel's opinion of THE FLAG Oskar M., from the hotel's website and recent guest reviews. Sources: Hotel website · Tripadvisor · Expedia · Booking.com. Reviewed Oct 20, 2026.

About THE FLAG Oskar M.

• Oskar-von-Miller-Straße 10, Frankfurt
• Amenities: Air conditioning, Elevator/lift, Smoke-free property, Heating, Security guard, Ticket assistance, Express check-in/check-out, Television in lobby, Terrace, Fire Extinguisher, Dishwasher, Reception desk
• City page: Hotels in Frankfurt

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