I would like to propose to use your GPS device during your journey only to find ways out of the big cities (if you have such device). If during orientation you rely solely on the GPS then you will be led to side roads and your journey will be more difficult because of the pits and carts!
Proposed route: If you cross the border at Bors, then driving along the E60 international road you reach (10 km) (Oradea), (153 km) (Cluj-Napoca), (31 km) (Turda), (76) and (Tirgu-Mures). Going further you will reach (25 km) (Balauseri), where we leave the E60 international road and we turn onto the completely renovated 13A-marked highway. After a short journey, passing (37 km) (Sovata) you will arrive to (44 km) (Odorheiu Secuiesc).
If you cross the border at Nadlac, then driving along the E68 international road you reach (50 km) (Arad), (153 km) (Deva), (65 km) (Sebes), (55 km) (Sibiu). After Nagyszeben we leave the E68 international road and we turn onto the 14A-marked highway in direction (55 km) (Medias). Then we arrive to (37 km) (Sighisoara) from where we travel another ten kilometers on the E60 international road reaching (Vanatori), where we turn left and on the 137 county road we reach (37 km) (Odorheiu Secuiesc).
You can reach the accommodation: Odorheiu Secuiesc - Bradesti - Tarnovita- Zetea- Sub Cetate - a total of 20 kilometers