Get good quality Cat6 cable that is "shielded" from interference.
This is an example of a good WAP with 4 ethernet ports so you can connect other devices by ethernet cable as well (e.g. games consoles).
https://www.amazon.co.uk/NETGEAR-AC2000-Wireless-Access-WAC124-100UKS/dp/B01N47QKDQ/
Whichever you go for (cheaper ones are available) make sure it has 1GB ethernet ports.
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John
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I do not work for VM. My services: HD TV on VIP (+ Sky Sports & Movies & BT sport), x3 V6 boxes (1 wired 2 WiFi,) SH2 in modem mode with Airport Extreme Router +2 Airport Express's. On VIVID200, Talk Anytime Phone, x2 Mobile SIM only iPhones.