I booked through www.rentinbulgaria.com a three bed flat in the city centre in Bourgas 10 min from the sea. Lovely apartment with terrace and 2 bathrooms and immaculate maid service. The price was very cheap as we booked directly with the owner via e-mail and get a great discount.
IF anyone want to book you can do it via e-mail:m_etimov@yahoo.com and if you want to get more info for Bourgas www.bourgas.com. You can get a great deals also in Sunny Beach as the owners got another family apartment and studio there less than 300m from the sea. I am going again in late August.Anyone needs more info I'm ready to help.