The Marriott offers aerobics, circuit training, tae-bo and power yoga classes at around 18:30, but it's quite expensive (2000QR for registration and I think 6000QR per year).
The Marriott offers aerobics, circuit training, tae-bo and power yoga classes at around 18:30, but it's quite expensive (2000QR for registration and I think 6000QR per year).