There are plenty of cute robots on the market. Not all of them are suitable for research though. The TIAGo Robotic Platform is different. It has navigation, perception, and manipulation capabilities. Its arm can reach the floor or a height of 175cm. It can also handle objects as heavy as 2kg.
TIAGo has a small footprint with the arm folded. It is 100% ROS based. The above video shows what you oget.