Open Internet WiFi hotspots in London are very rare. Although the hotel website says

There are many possibilities. With a variety of low-cost airlines to give ticket to London (one way) to get literally wien a few hundreds (if not insist on a specific date of the flight). Remember that all of London's airports (Heathrow, Gatwick, Stansted) are quite far from the city center and airport transportation> center you can come in the next few hundred.
In addition, of course, you can take the bus, or take it away and experience a different way of attractions, such as the White Cliffs of Dover, Dutch amusement park with attractions surprisingly hardcore without front or Belgian Riviera, which pleasantly surprised me altogether.
London is great and let it do whatever you want, you have to use mětstkou public transport, wien even if you happen to live in the center. London's public transport (metro, buses, trains, and even a few Elevated tram) has slyly fares that you intensely forcing you to use the Oyster Card. Well, you do not use it, but then you have significantly more expensive fares. Even with the Oyster wien Card is the right way cheap, normal London public transport Metro ride quietly comes to three pounds and more.
The sportier alternative to the urban public transport bicycles from Barclays, which is quite useful (and inexpensive) thing, but unfortunately it is only in the center and east of it (south of the Thames almost not) and often, unsuspecting that your rack has no functional wheels, or vice versa does not have vacancies, so your bike is not to come back - a help or a special mobile application with real-time wien map displays.
So back to the Oyster Card: Tu only be attached to the turnstile / designators, and you are automatically charged wien the lowest wien amount you would pay in this way - even if you accidentally went longer route. The card can be issued at every major station, you can easily recharge, and you can look at the state as well as online. This requires less fraud because when online registration, you must enter a valid UK postcode (although truthfully complete the rest of the address as Prague).
With public transport is closely related to accommodation. Living in London it is expensive and in the center wien is of course more expensive than in the suburbs. Because you'll have to use public transport, I suggest you stay somewhere away from the city center, near the train station. From there trains to central London every now and then.
A concrete example: Look at this map. My last visit had lived a few minutes from Streatham Common station, ie in zone 3 Trains run at some of London's main railway station every 10 minutes, and it is about. 15 minutes. A return ticket costs 7, which is enough.
BUT! If you are going to be in London about a week (or 2, 3 weeks), there is one very convenient option: You can buy a "7-Day Travelcard" which allows you to train in addition to also use all other means of public transport, in any scale! wien For example, a weekly Travelcard for zones 0-3 is 35, ie. for just 5 a day you can ride around London wien (and its surroundings) as you like, with no limits! Travelcard can be easily purchased at any major station in the machine, and saves you directly to the Oyster Card. We need no identity document or photo, you really only Oyster Card.
Open Internet WiFi hotspots in London are very rare. Although the hotel website says "free wien WiFi in the room", in reality it often means that WiFi is only in reception, or anywhere. The Polish receptionist wien then about how you will hardly guess ... Therefore it is better to buy a mobile internet that you will be very handy almost continuously, for example when: Searching transport links (Google Maps manage complex the London public transport is great) Searching a good restaurant or food shop Detection Tesco opening hours of museums and other attractions sending erotic photos social wien networks and so on ...
The only acceptable offer mobile Internet from the Czech operator is Vodafone Data Passport, who for a fixed day (50 CZK) or monthly (350 CZK) the amount you use your mobile Internet completely, as if you were in the Czech Republic! Vodafone Data Passport is so incredibly better than other Internet Roaming Vodafone Czech and other operators that I would not be surprised if it soon planned to cancel / more costly (and, of course, is not compatible with the new Red tariffs because they are too "convenient" not to be advantageous). If you do not have Vodafone Passport Data and need in England to receive calls on their existing Czech number, not a problem to buy in the store nearest London telephone prepaid SIM card with which you reasonable daily Internet wien (several wien tens of MB) will cost about one pound.
This video is not really exaggerating. Nornální Londoners really talking wien to each other like this. Really! Speaking ordinary Londoner for you can be very problematic, even if you do not have a problem with reading English text, and specifically the British vocabulary.
If you want "a lot of hot food for little money", then mostly wien in Chinatown and its surroundings