Larger room for mother &daughter 7N, Melia White, Citadines Covent G., or?? SoHo, B. Museum areas

hey hey juliamasonster
move this post into the england column, you're posting in reviews which travelers have been and giving their own thoughts.
you'll get more answers in the england section.

negative comments about check-ins may be from people that arrive early and can't get in. check-in times 3-4pm and check-out times 10-11am. some may not allow luggage storage until check-in time, usually airbnb's/vrbo's/private apartments, read the fine print,
happened to us, arrived heathrow at 8am and no check in till 2pm years ago. have learned a lesson, ask for early check-in or rent room one day before and inform host/hostess.
aloha

London is obviously expensive to begin with, and you don't mention the time of year you
want to go, so it's hard to try to suggest something in a price range.

You could either:

1) research aparthotel chains: Citadines as noted, also Fraser, Staycity, Adagio, and others.
They won't be the cheapest, but will offer consistency and usually are well located. Another
small advantage which you haven't brought up is that they usually have laundry facilities onsite.

2) Try booking.com if you haven't already, as they will offer individual flats/rentals as well
as the more standard options.

I will say that if you are not that familiar with London neighborhoods, I might avoid the
individual flats, as there is a lot of variance in the quality/size of accommodations in London.

Also, if you are willing to ride the Tube a bit, the aparthotels have multiple locations so
you might get a better price and still the same type of lodging a bit away from the center.

My go to hotel these days in London is the Radisson Blu Mercer Street in the Seven Dials/ Covent Garden area. It is very close to the British Museum, tube stops, restaurants, shopping and the theater district. Some twin rooms can be small so I always request a larger one which they have given me. I stayed there in February and was really happy. Sound-proofing is great and I liked that the windows opened when I wanted fresh air. Service is great. If I was bringing my 18 year-old daughter to London, I know she would love this hotel and the area where it is located. Join the reward club for added benefits.

People on this forum really like the Resident Covent Garden. They have kitchenettes and get great reviews. Everyone who stays there seems happy with it.
One thing to remember is that London is so much fun that you were are not in your room much other than sleeping so you really don't need a very large room.

This is my go to place in London when traveling with others. It is extremely popular, so I don’t know if your dates will work or not.

https://www.vrbo.com/1939081ha?dateless=true

welcome to the forum juliamasonster. As noted you might try a search engine like Booking to identify properties that suit you. You don't have to use the platform to book but it has helpful filters to assist with sorting and ratings can only be left by people who stay at the property. FWIW on that platform the Melia White House apartments are middle of the road rated, the Citadines Holborn has much higher rating.

Your budget of about 250 pounds per night may be low depending on the time of year you are going. You're looking in very busy and popular areas which may increase the price. To get more floor space you may need to sacrifice a criteria (like having a kitchenette) or staying in a different neighborhood.

Aparthotels may be the way to go. They are hotels that are like apartments. Mostly chains.

Staybridge Suites

Residence Inn

Citadines

Fraser Suites

Hyatt House

Adagio

Wilde/Staycity

Native

Locke

Aparthotels may be the way to go. They are hotels that are like apartments. Mostly chains.

Staybridge Suites

Residence Inn

Citadines

Fraser Suites

Hyatt House

Adagio

Wilde/Staycity

Native

Locke

Almost all have multiple locations in London.