I think we got our sofa from Helios back in 2009 after the colour wore off our previous sofas. Helios is on the same run of shops as Masterhaus on the edge of Sunny beach / Nessebar. There are a lot of shops on the dual carriage way on the way to Bourgas. Next time you are over there have a look at these shops. We have bought quite a lot of stuff from these shops in the last two years, other items prior to that.
Janet Supermarket does electrical goods as well as food. You can order on line from the UK from Masterhaus and get a discount for ordering on line. Delivery is free for on line orders. We ordered a new washing machine earlier this year and gave them three dates we would be over there for delivery. We emailed first to see how far in advance we would need to order.
Here is the shop. You can't see much on line, you need to go there and look.
http://furniturehelios.com/en/We are in the UK at the moment but I can scan a photo and email it to you or take a photo of a photo of our sofa in our apartment and send it to your mobile. Send me a private message with your email address or mobile number and post on here to remind me to check my private messages.
We have emailed several of these shops prior to purchasing. We have found them very responsive and very helpful.
Edit - here is a page with some corner sofas on:
http://furniturehelios.com/en/cat/soft- ... e-corners/Ours is very similar to the cream sofa pictured with the round glass coffee table. On ours, the bed pops up from under the kick board bottom. I would suggest lying on them to try for comfort before you buy, they do vary a lot in level of comfort and quality.
Be careful about the back of the sofa. We never realised ours had black fabric on the back, the sort you would expect underneath the sofa. This may be because they expect it to be against a wall. It would matter if you were to use the sofa in the middle of a room or of the back showed through your patio door.