Weightlifting gym that doesn't require a 3/6 month contract

My husband and I are traveling to Dhaka for 2 weeks. While we'll be mostly busy to actually go workout more that 3/4 times during this period, we'll still like the option. We don't want to spend 10k on a super premium gym, any clean gym with good equipment would work- as long as they are around Dhanmondi/manik mia/lalmatia/Farmgate. We're obviously willing to pay the full month's membership, but paying admission fee+a month's membership for two people seems excessive.

Could you recommend some gyms that have day passes, or won't charge 3k+ per person considering we may not even be able to use the facility during our time there?