In the above mentioned non-interest loan as you have not to pay interest hence you are allowed to avail this facility. If the institution which gives the loan takes some fees as service charge it is allowed to pay it and due to it the original loan shall not be termed as interest based loan (Ref: Ghair Sudi Bankari, p. 202-208). It is not lawful to pay the fees from interest money.
Allah knows Best!
Darul Uloom Deoband