Ours family enjoyed the wonderful seven days stay! The facilities were adequate and complete. Good location, you can reach the other side of Tokyo without changing rail.
As many had highlighted, many convenience stores and eating places nearby.
We bought Suica card (cashless payment for all train rides and accepted by all outlets at JR stations, convenience stores and even big departmental stores, and remember to get the refund of the balance at airport counter before 8pm or any JR stations) from the JR machine at the airport and pocket wifi from KKday website (~USD$2.5 per day for up to ten devices, before departure date and collect/return it from/to the airport counter).