Variable speed motors driving the pumps simplifies the controls at the expense of higher initial cost. And stage the pump on demanded operation so both don’t run unless needed. Multi pump controller should be able to use equivalent to pump curves to manage the combined operation and avoid sudden bumps in flow or pressure at the users. Need to figure out a design max flow case ( assumed number and type of users one at one time ) to avoid the superbowl commercials effect on pressure.
if that is a bladder pressure buffer tank, best to keep one in the system to ride out short demand spikes. As Crossy suggested, the existing one may be waterlogged. They require minimal, but routine , maintenance.
Also, if it makes sense, consider reworking the pump piping so that one pump can run independently in the event you have to work on the other. The system will be at reduced capacity, but for a hotel, having some supply could be beneficial.