best rdp app in linux which i have used and enjoy it is :
Remmina
install :
apt install remmina
apt install remmina-plugin-rdp
or:
wget http://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm
rpm -ivh epel-release-latest-7.noarch.rpm
there is more plugin for remmina like ssh and sftp