We stopped by Mub'art after our recent visit to the Fine Art Museum (SMK) for coffee drinks and found them lacking. Double espresso and coffee tasted weak and not much enjoyed. Side pudding was good though.
If you are only visiting for post museum visit coffee and drinks, you are seated in a separate area to general dining. The tables and seats are a bit low to the ground which might be an issue for visitors with mobility issues. Otherwise, they are generally comfortable.
Perhaps it is best to visit for dining but we were discouraged from trying after our coffee drinks and opted to make way back to the city centre to find lunch there.