Place to stay with air con in London

I can recommend the Nadler Kensington which is near the Earls Court tube. I've stayed there on three occasions and just booked today for a trip in May. The price just dropped drastically today (I got a single room for 75 GBP) and I don't know how long the low prices will last. Rooms are small, but they have AC, kitchenettes with a fridge, coffee maker, and microwave and nice modern bathrooms with good showers.

I can second the Nadler Kensington. I stayed there for just under 50 nights in 2016 and will probably stay there again for that amount this year.

It almost feels like home to me. And I'm treated more like a friend than a guest.

Great staff, convenient location, clean rooms.

Unless we have a once in a decade heatwave, you shouldn't need AC.

The construction of modern hotels though tend to make them overly stuffy and they can be much more uncomfortable without A/C than a private home.

See my recent discussion here. We ended up using Airbnb and filtered the search using air conditioning which knocked out a lot of places.

https://community.ricksteves.com/travel-forum/england/do-we-need-air-conditioned-room-in-london-in-july

I completely agree with Marco. I lived in London for a year and my flat was very comfortable without AC. It had big windows and good air circulation. My experience with hotels has been totally different.

I returned to London on holiday one August and stayed in 2 different hotels that were uncomfortably warm. In one, the window overlooked a small interior court yard and the room got no breeze. In the second, the window would only open about 6 inches. When I visit London in the summer, I tend to choose hotels with AC simply because you never know if your hotel room will have decent ventilation.

My husband and I spent all of August, 2016 in London (23 days) and 8 nights (in the Cotswolds). We stayed at the Conrad St. James (St. James Park. We were very glad we had a/c. There was a heatwave for 8 days. We were so tired and hot, that we ended up going back to our hotel to enjoy the a/c. We totally enjoyed staying at the the Hilton Conrad. We were just a short walk to Parliament, Big Ben, Westminister Pier, Buckingham Palace, etc.