I have been holding a tenancy agreement with you for 4 years, and now we have reached the end of it: I just wanted to send you a thank you letter for having looked after me and the property I was renting.
In particular Mr Parmar has always been a reference point for any enquiry and has always been promptly helping to resolve any issue.
I am happy that you have showed a very human, fair and honest attitude during the time of our deal, and I would definitely recommend your company as reliable and efficient.
Marco