I stayed 3 weeks on Palawan island (El Nido in the north and Puerto Princesa in the south) in Philippines and spent 1600 EUR.

To keep the same blogging style I will start by saying that you can get a beer for 1.5 EUR, a coffee for 3 EUR and a meal for around 5 EUR.
1601.90 EUR Expenses
8.52 EUR ATM
532.26 EUR Accommodation
53.37 EUR Homestay
306.72 EUR Hotel
172.17 EUR Ashram
137.85 EUR Drinks
122.69 EUR Alcohol
6.48 EUR Coffee
3.66 EUR N/A
0.51 EUR Tax
0.17 EUR Tip
4.35 EUR Water
279.71 EUR Food
5.11 EUR Arab
0.68 EUR Burger
8.01 EUR Desert
27.67 EUR Filipino
3.75 EUR Fries
1.79 EUR Fruits
4.43 EUR Greek
7.50 EUR Indian
6.48 EUR Italian
4.77 EUR Japanese
8.88 EUR Mexican
14.14 EUR Seafood
2.22 EUR Snack
0.34 EUR Tax
0.09 EUR Tip
0.85 EUR Tot
170.40 EUR Vegan
3.75 EUR Gear
2.56 EUR Haircut
4.60 EUR Laundry
10.22 EUR Others
6.82 EUR SPA:Massage
412.37 EUR Sports
238.56 EUR Freediving
3.41 EUR Tax
170.40 EUR Yoga
1.28 EUR Toiletries:Mouthwash
30.67 EUR Tours
6.65 EUR TransferWise
164.64 EUR Transportation
125.61 EUR Airplane
28.97 EUR Bus
10.05 EUR Taxi
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1601.90 EUR
I will keep it short and I will only say that Philippines in general and Palawan in particular is a top diving destination.
If you are into water sports (snorkeling, diving, kayaking, sailing, etc) then this is the place to go. There are lots and lots of options everywhere, rent a kayak and go visit nearby hidden beaches, take a scuba/free diving course and go swimming in/around shipwhreck and so on. For the first time, I tried freediving with these guys Freediving Dimension and it was an awesome experience, no oxygen tube, no hassle, just you and the mother nature.
Other than water sports you can rent a bike/bycicle and ride around the hilly island, enjoy fresh/cheap sea food by the beach or just admire the incredible scenery. Pay around 30 EUR for a boat tour and enjoy the amazing karsts that rise from the water. I've also seen Krabi, Thailand and Ha Long bay, Vietnam but El Nido/Coron in northern Palawan has the best karsts and small isolated/inhabited islands/rocks everywhere.
Another thing to consider is that this place is still unspoilet and not touched by mass tourism yet, expecialy the east and sourth parts of the island. Maybe El Nido and around is a bit touristy but nothing like popular destinations in Thailand or even Viet Nam.
Happy diving!!!