To compare the apartments you like, and choose the most suitable one - use the feature To comparison.
In order to do this, click on To comparison caption for those apartments that you want to compare. Then click on the sign of the weight in the upper right corner to compare the selected apartments.
If the flat, you are interested in, is open in a separate tab, you do not need to go back to the general list of apartments to tick To comparison - you can do it directly in the tab.
Thanks to this function, you will have the opportunity to view all the characteristics (such as cost, district, square, etc.), sleeping places, location and amenities (Wi-Fi, washing machine, cable/satellite TV and etc.), as well as information about the owners of the apartments you like at the same time, and not switch from one tab to another ads to decide which apartment is more suitable.