Hi I’m new to this group

I’m planning a trip for my husband and I to visit London and Paris next summer. We have never been out of the US except to Canada so this is gonna be totally different. I’ve been told by a lot of people it’s best to stay in out parts of the cities as it is cheaper. I want to stay somewhere that we can get easy transportation and still get really great views. Any and all advice would be greatly appreciated. T.I.A