Product Review

ESP32 is already integrated antenna and RF balun, power amplifier, low-noise amplifiers, filters, and power management module.
The entire solution takes up the least amount of printed circuit board area.
This board is used with 2.4 GHz dual-mode Wi-Fi and Bluetooth chips by TSMC 40nm low power technology, power and RF properties best, which is safe, reliable, and scalable to a variety of applications.

Features:
High performance-price ratio
Small volume, easily embeded to other products
Strong function with support LWIP protocol, Freertos
Supporting three modes: AP, STA, and AP+STA
Supporting Lua program, easily to develop

Development Board:
https://github.com/espressif/arduino-esp32
https://github.com/nodemcu/nodemcu-firmware/tree/dev-esp32
https://github.com/Nicholas3388/LuaNode

If it cann't get bluetooth working?
Using Node32s as the Board selection. To reference GPIO pins in code use just the number, for example "digitalWrite(13, HIGH)" sets GPIO13 high.
The built-in LED to GPIO2.

Package including:
2 x ESP32 Development Board