Paying for accomodation

I've just extend my credit card financial amount to 50,000 THB. This is the preparation of reserving accomodation which will cost 250 £. This deposit will be returned upon the finish of the contact (i.e. next year).

I aim to choose following houses:

1. Richmond
2. Morgan Court
3. Holland Annexe

This because I want the en-suite, e.g. bath-room included in the room, and a place not far from George Square.