I assume that payment will have been made by my friend/s by use of credit card..
Whilst I accept that it may be an unusual client request, it would be much appreciated if you could could have a quick search when next you may have a few spare minutes.
What would also be of interest to me would be the actual commercial rate that the general public would have paid for the use of these flats so that I can have an idea of the financial benefit that my friendship may been considered to have perhaps brought about on this occasion.