Your budget is small, and it's not going to buy you that much. If you want to rent the property out, then realistically, you'd need to buy nearer the coast. Your budget isn't coast friendly though, as property prices are usually much higher.
You could look slightly more inland, but within a good driving distance from the coast. You would need a town that offered good restaurants/bars/shops etc, and that was walkable....people don't want to have to drive to go out to eat! Public transport away from major coastal tourist areas, can be hit and miss, so those renting would need to be comfortable hiring a car.
My FIL lived on the Costa Blanca in Spain, near 2 coastal touristy towns, but his house was inland. Yes, you had to drive to the beach, but the complex where he bought, had shared access to a swimming pool. The town is walkable, with good facilities but zero public transport!! Well, it might have had a bus once a day, but you get the idea!! You have to factor in that the rental yield, even in high season won't be as much, compared to being by the beach.