Qatar Airways is offering up to 10% discount for Economy class and up to 15% for Business class if you use discount code ThankYou2016.
Validity: 13-26 December 2016
Travel dates: 11.01.2017-14.06.2017
1) Sofia – Bangkok EUR412 07.02-27-02.2017
2) Sofia – Bali EUR663 13.02.-27.02.2017
3) Barcelona – Bangkok EUR506 07.02-01.03.2017
4) Barcelona – Kuala Lumpur EUR472 01.03-15.03.2017
5) Barcelona – Singapore EUR504 01.03-15.03.2017
For accommodation I recommend you to search on HotelsCombined as it aggregates all booking portals including Booking. You can find hotel reviews on Tripadvisor which is also great for searching best places to visit.
Hostelworld offers perfect budget accommodation for students, backpackers and low cost travelers.
If you want to stay with a local, you should rent a room, apartment or house on Airbnb. When you travel on Airbnb, you will get €18 in travel credit as my referral.
I suggest to rent a car from RentalCars if you want to drive around these incredible destinations.