I made some calls from the room telephone.
chia-MA-te — three syllables, stress on the second.
Proactively disclose room telephone usage at check-out to avoid confusion when the bill is presented.
'Ho fatto alcune chiamate' uses 'fare' + 'chiamate' (calls, feminine plural). 'Dal telefono di camera' = from the room telephone. 'Alcune' (some) is the indefinite article for uncountable quantities in plural. Room calls in Italian hotels are typically charged at significant rates.
Quanto costano le chiamate dal telefono di camera?
How much do room telephone calls cost?
Ask before making calls — international calls from hotel phones can be very expensive
Ho chiamato l'estero. Quanto sarà?
I called abroad. How much will it be?
International calls from Italian hotel phones carry heavy surcharges
Posso vedere le chiamate nel conto?
Can I see the calls listed on the bill?
Ask for an itemised call list if the phone charge seems high
Room telephone calls in Italian hotels are charged at a premium — often 3–5 times the normal rate for national calls and much more for international. Always use your mobile phone for calls. If you must use the room phone, ask the rate first and keep calls brief.