The Mets is literally just a few steps from the gates of Shibuya station (South exit); you'll need less than 2 minutes from leaving the Narita Express until reception. Staff is friendly, rooma are clean, no-frills but spacious and very good value for money in Central Tokyo. The bar on 3f, where you also get a Japanese breakfast, is a nice place for an evening beer as well. Recommended.

As the title, it is ok to stay for a short trip.
The room with a big bed is a little bit small but it is normal in Tokyo actually. The room with two single beds is bigger.
You can have free internet access with RJ45 LAN port in the room but there is no free Wi-Fi available.
In brief, room is clean and the price is acceptable with a very convenient location to access to JR Shibuya station and Tokyo Metro system.
Breakfast is good enough from my point of view. It is buffet service but the choice is not so much. You can have eastern style food such as rice and soup, or you can choose western style food such as milk, coffee and bread.
If you are just looking for a "not bad" hotel with good location and price, and you will not spend so much time in your room, then you can consider Hotel Mets Shibuya.

Great location, good room, great staff, NO WIFI, horrible breakfast, wired Internet in hotel was Like dial up!! Amazing location tho right at the shibuya south exit stop and right at the narita xpress stop as well. Room were nice overall it was good! If it had wifi n a good breky it'd ve a 5/5

Located in the actual Shibuya new south subway exit, impossible to miss and very convenient for around town travelling. Extremely central and easy accesible. 3 minutes walk to Shibuya Crossing. Rooms are small and english understanding limited. Free wi-fi on floor 8. Roomier and more luxurious rooms on the 14th floor is well worth the 500 yen / day upgrade. Over the rooftop views from 8th floor and above. Free breakfast at 2 nice breakfast cafes (one western and one japanese). Nice hard beds. No gym that I could find.